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Sample records for barcelona argonaut reactor

  1. Decommissioning of an argonaut type reactor at the Technical University of Catalonia in Barcelona (Spain)

    International Nuclear Information System (INIS)

    The reactor ARGOS is a training nuclear reactor that was active, from 1962 to 1976, at the Technical University of Catalonia (UPC) in Barcelona (Spain). It is an Argonaut type experimental Reactor with 10 kW of maximal thermal power, and was set up by the main Spanish Nuclear Research Centre, presently named CIEMAT, in the period 1958-1962. In 1977, the nuclear installation was halted for technical, economical and administrative reasons. The fuel burn-up of the reactor was 2.7 kWh. In 1992 the fuel was removed from the site and a dismantling project was launched by an academic team of the UPC Nuclear Energy Department. In 1998 the Spanish authorities approved the dismantling plan which was based on the IAEA document Planning and Management of the Decommissioning of Research and Other Small Nuclear Facilities, IAEA 1993. In this plan the University proposed to set up its own dismantling group mainly based on its own academic staff and experimental facilities

  2. Analysis of credible accidents for Argonaut reactors. Report for October 1980-April 1981

    International Nuclear Information System (INIS)

    Five areas of potential accidents have been evaluated for the Argonaut-UTR reactors. They are: insertion of excess reactivity, catastrophic rearrangement of the core, explosive chemical reaction, graphite fire, and a fuel-handling accident

  3. Argonaut type reactor for the best possible Phase Ia training of nuclear plant operators

    International Nuclear Information System (INIS)

    The Argonaut type reactor is an excellent training tool for the training of Electric Utility Nuclear Plant Operators. The training advantages of this type of reactor can best be seen by comparing its design characteristics to a typical large pressurized water reactor and other research/training reactors not necessary for reactor operator training are explained. Some minor modifications of the Argonaut at UCLA would prove valuable and are under consideration. A complete one week Phase Ia training program proposal has been made by UCLA to selected utilities and a summary of this program is presented

  4. The Siemens-Argonaut reactor as a driver zone for a high-temperature reactor cell. Der Siemens-Argonaut-Reaktor als Treiberzone fuer eine Hochtemperaturreaktorzelle

    Energy Technology Data Exchange (ETDEWEB)

    Mueller, H.; Schuerrer, F.; Ninaus, W.; Oswald, K.; Rabitsch, H.; Kreiner, H. (Technische Univ., Graz (Austria). Inst. fuer Theoretische Physik und Reaktorphysik); Neef, R.D. (Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Reaktorentwicklung)

    1984-12-15

    To enable a validation of neutron physics calculation methods for pebble bed reactors the inner reflector of an Argonaut research reactor was substituted by a full of about 1200 fuel elements of the AVR-Juelich type. The report describes the measuring instruments and the reactor physical layout of the arrangement by the code packages GAMTEREX, ZUT-D.G.L. and MUPO. Comparison of calculated reaction rates with measurements show good agreement. Application of the codes to high-temperature reactors in abnormal states is envisaged. (Author, translated by G.Q.)

  5. CERREX Software Applied to a Research Reactor of the Generic Argonaut Type. Appendix IV

    International Nuclear Information System (INIS)

    This appendix presents the results of a cost calculation for the dismantling of a research reactor of the generic ARGONAUT type, performed using CERREX, and compares the results with a cost estimate obtained by the facility owners. The ARGONAUT reactor was first developed at the Argonne National Laboratories, USA. Typical roles and the main features of the ARGONAUT included: Participation in training activities in neutron flow and neutron activation analysis; Support for public research of irradiation of materials, implementation of analytical techniques using a neutron source and production of radioisotopes; Provision of similar services to companies under a contractual framework; A maximum power of 100 kW, with power typically between 1 and 100 W used for teaching purposes and up to 100 kW for irradiation. The reactor was dismantled between 2006 and 2008. The duration of the decommissioning site works estimated by the facility owners was 13 months, assuming 21 working days per month and 8 working hours per day (8 x 21 x 12 = 2016 working hours per year, see cell V2 in the 'ISDC' tab). Furthermore, the owners assumed six workers to be present on-site at any given time

  6. Determination of one spectral index at the argonaut reactor

    International Nuclear Information System (INIS)

    One spectral index at the Argonauta Reactor was determined. The Westcott formalism was employed assuming two components: Maxwellian and 1/E. The values of g(T) and s(T) were obtained from the Westcott definitions by means of the Breit - Wigner formula for the cross section. The r and T were determined for one point at the core of Argonauta Reactor. (author)

  7. Decommissioning the Jason Argonaut research reactor at a world heritage site

    International Nuclear Information System (INIS)

    The Jason low power Argonaut type, water and graphite moderated reactor was located in King William Building, which is a Grade 1 listed building within the Royal Naval College, Greenwich, London. The College itself is a Scheduled Ancient Monument with World Heritage Site status and is situated about a mile from the Greenwich Dome. The decision to decommission Jason to International Atomic Energy Agency Stage 3 status (unrestricted site use) was taken in 1996. All physical decommissioning work was completed by October 1999, site radiological clearance was obtained in November 1999, the site license was withdrawn and the site was handed over for future unrestricted use on 9 December 1999. The Jason decommissioning project was safely completed to time, cost and quality by the Millennium [2] without any adverse effects on World Heritage aspects of the site. In this paper details are provided about the Jason fuel removal phase and an outline of the other phases of the project

  8. Report on the interpretation of critical experiments in the Siemens-Argonaut-Reactor Graz to study water ingress into spherical elements. Ergebnisbericht zur Auslegung kritischer Experimente am Siemens-Argonaut-Reaktor Graz zum Studium des Wassereinbruches im Kugelhaufen

    Energy Technology Data Exchange (ETDEWEB)

    Schuerrer, F. (Technische Univ., Graz (Austria). Inst. fuer Theoretische Physik und Reaktorphysik); Neef, R.D. (Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Reaktorentwicklung)

    1979-04-15

    The experiments described are of interest in the study of water contamination in HTR fuel elements. The Siemens Argonaut Reactor (SAR) has been considered as a research tool for a simulation experiment. Following a brief description of the SAR, planned programs are discussed in 'dry' and 'wet' cores. Detector foil types and locations are noted. A theoretical model is developed and nuclide concentrations estimated in the various spectral zones. Reactivity calculations have been made and are summarised for various H{sub 2}O percentage concentrations. The discussion is supported by simplified core layout diagrams and graphs of core flux distributions. Neutron diffusion and spectra calculations are referenced to computer programs used by KFA-Juelich, published elsewhere, and include GAM, THERMOS, MUPO and EXTERMINATOR-2. (G.C.)

  9. Upgrading the Siemens Argonaut Reactor Graz with a digital monitoring system

    International Nuclear Information System (INIS)

    This paper presents a modern design of a reactor monitoring system (MS) which was developed for a research reactor. This MS is using digital concepts, and it is more flexible than an analog MS, it co-operates better with the user, and it is a very helpful tool for a training-reactor in an university environment. The heart of the system is a process computer, and it was possible to access all important signals and functions of the original nuclear instrumentation by additional hardware. The monitoring software was written in C for the platform '32Bit-DOS-protected-mode' and shows on several high-resolution screen pages all the collected signals and the working conditions of the reactor. Moreover, all signals which are recorded on the random access memory can be saved to the hard disk of the computer and may thereby be used offline as well.(author)

  10. Report on the interpretation of critical experiments in the Siemens-Argonaut-Reactor Graz to study water ingress into spherical elements

    International Nuclear Information System (INIS)

    The experiments described are of interest in the study of water contamination in HTR fuel elements. The Siemens Argonaut Reactor (SAR) has been considered as a research tool for a simulation experiment. Following a brief description of the SAR, planned programs are discussed in 'dry' and 'wet' cores. Detector foil types and locations are noted. A theoretical model is developed and nuclide concentrations estimated in the various spectral zones. Reactivity calculations have been made and are summarised for various H2O percentage concentrations. The discussion is supported by simplified core layout diagrams and graphs of core flux distributions. Neutron diffusion and spectra calculations are referenced to computer programs used by KFA-Juelich, published elsewhere, and include GAM, THERMOS, MUPO and EXTERMINATOR-2. (G.C.)

  11. The Use of the 10-kW Argonaut Reactor at Petten for Radioactivation, including the Quantitative Aspects of Short-Time Irradiations

    International Nuclear Information System (INIS)

    Some problems and possibilities in performing activation analysis with a small reactor using short irradiation times are described. A brief survey is given of the reactor and its application for chemical purposes. Three problems occurring when working with a small reactor and the solution we have found for them are discussed: (a) the calibration of short-lived radioisotopes using direct γ-spectrometry; (b) the evaluation of the inevitable errors adherent in activation analysis using short irradiation times; and (c) the analytical use of (n, α) reactions by measurement during irradiation. Some results are mentioned. (author)

  12. Modeling and analysis of Schistosoma Argonaute protein molecular spatial conformation

    Directory of Open Access Journals (Sweden)

    Jianhua Zhang

    2011-08-01

    Conclusions: The information relationship between the structure and function of the Argonaute protein can be initially established with bioinformatics tools and the internet server, and this provides the theoretical basis for further clarifying the function of Schistosoma Argonaute protein.

  13. Domain motions of Argonaute, the catalytic engine of RNA interference

    OpenAIRE

    Wall Michael E; Ming Dengming; Sanbonmatsu Kevin Y

    2007-01-01

    Abstract Background The Argonaute protein is the core component of the RNA-induced silencing complex, playing the central role of cleaving the mRNA target. Visual inspection of static crystal structures already has enabled researchers to suggest conformational changes of Argonaute that might occur during RNA interference. We have taken the next step by performing an all-atom normal mode analysis of the Pyrococcus furiosus and Aquifex aeolicus Argonaute crystal structures, allowing us to quant...

  14. Effects of Argonaute on Gene Expression in Thermus thermophilus

    OpenAIRE

    Swarts, D.C.; Koehorst, J.J.; Westra, E.R.; Schaap, P.J.; Oost, van der, J.

    2015-01-01

    BACKGROUND: Eukaryotic Argonaute proteins mediate RNA-guided RNA interference, allowing both regulation of host gene expression and defense against invading mobile genetic elements. Recently, it has become evident that prokaryotic Argonaute homologs mediate DNA-guided DNA interference, and play a role in host defense. Argonaute of the bacterium Thermus thermophilus (TtAgo) targets invading plasmid DNA during and after transformation. Using small interfering DNA guides, TtAgo can cleave single...

  15. Effects of Argonaute on Gene Expression in Thermus thermophilus

    OpenAIRE

    2015-01-01

    Background Eukaryotic Argonaute proteins mediate RNA-guided RNA interference, allowing both regulation of host gene expression and defense against invading mobile genetic elements. Recently, it has become evident that prokaryotic Argonaute homologs mediate DNA-guided DNA interference, and play a role in host defense. Argonaute of the bacterium Thermus thermophilus (TtAgo) targets invading plasmid DNA during and after transformation. Using small interfering DNA guides, TtAgo can cleave single ...

  16. The Crystal Structure of Human Argonaute2

    Energy Technology Data Exchange (ETDEWEB)

    Schirle, Nicole T.; MacRae, Ian J. (Scripps)

    2012-07-18

    Argonaute proteins form the functional core of the RNA-induced silencing complexes that mediate RNA silencing in eukaryotes. The 2.3 angstrom resolution crystal structure of human Argonaute2 (Ago2) reveals a bilobed molecule with a central cleft for binding guide and target RNAs. Nucleotides 2 to 6 of a heterogeneous mixture of guide RNAs are positioned in an A-form conformation for base pairing with target messenger RNAs. Between nucleotides 6 and 7, there is a kink that may function in microRNA target recognition or release of sliced RNA products. Tandem tryptophan-binding pockets in the PIWI domain define a likely interaction surface for recruitment of glycine-tryptophan-182 (GW182) or other tryptophan-rich cofactors. These results will enable structure-based approaches for harnessing the untapped therapeutic potential of RNA silencing in humans.

  17. Saalivalvurid varastavad ka Barcelonas

    Index Scriptorium Estoniae

    2000-01-01

    Hispaania politsei tabas Barcelona Arheoloogiamuuseumi saalivalvuri Manuel Gasca, kes varastas muuseumi hoidlaist umbes 35 miljoni Eesti krooni ulatuses vana-egiptuse, foiniikia, etruski ja vana-rooma arheoloogilisi leide (mündid, keraamika, skulptuur jt.) ning itaalia graafiku Giambattista Piranesi 150 gravüüri.

  18. Spent fuel situation at the ASTRA Seibersdorf and the TRIGA Vienna research reactors

    International Nuclear Information System (INIS)

    In the past decades Austria operated three research reactors, the 10 MW ASTRA reactor at Seibersdorf, the 250 kW TRIGA reactor at the Atomic Institut Vienna and the 1 kW Argonaut reactor at the Technical University in Graz. Since the shut down on July 31st, 1999 and decommissioning of the ASTRA reactor and the shut down of the ARGONAUT reactor Graz on July 31, 2004 only the TRIGA reactor remains operational. The MTR fuel elements of the ASTRA reactor have been shipped in spring 2001 to Savannah River and the fuel plates from the ARGONAUT reactor Graz in December 2005 under the DOE fuel return programme. (author)

  19. Functional dissection of a plant Argonaute.

    Science.gov (United States)

    Fátyol, Károly; Ludman, Márta; Burgyán, József

    2016-02-18

    RNA guided ribonuclease complexes play central role in RNA interference. Members of the evolutionarily conserved Argonaute protein family form the catalytic cores of these complexes. Unlike a number of other plant Argonautes, the role of AGO2 has been obscure until recently. Newer data, however, have indicated its involvement in various biotic and abiotic stress responses. Despite its suggested importance, there is no detailed characterization of this protein to date. Here we report cloning and molecular characterization of the AGO2 protein of the virological model plant Nicotiana benthamiana. We show that AGO2 can directly repress translation via various miRNA target site constellations (ORF, 3' UTR). Interestingly, although AGO2 seems to be able to silence gene expression in a slicing independent fashion, its catalytic activity is still a prerequisite for efficient translational repression. Additionally, mismatches between the 3' end of the miRNA guide strand and the 5' end of the target site enhance gene silencing by AGO2. Several functionally important amino acid residues of AGO2 have been identified that affect its small RNA loading, cleavage activity, translational repression potential and antiviral activity. The data presented here help us to understand how AGO2 aids plants to deal with stress. PMID:26673719

  20. Barcelona A ja B = Barcelona A and B / Inga Raukas

    Index Scriptorium Estoniae

    Raukas, Inga, 1967-

    2006-01-01

    Barcelona arendamisest. Herzog ja de Meuroni büroos kavandatud Foorumi näitusekeskuses 2006. a. märtsist juuni alguseni avatud näitusest "Barcelona in Progress", mis püüab haarata eduloo ajalugu ja tulevikku. Bibliograafia lk. 71

  1. Physical Science in Barcelona

    OpenAIRE

    Roqué, Xavier; Roca Rosell, Antoni

    2013-01-01

    We provide a tour of Barcelona, Catalonia, Spain, following four routes through the city and one elsewhere in the city and beyond, focusing on sites of importance in physics. Route 1 covers the Old Town, its Gothic Quarter, Plac ̧a del Rei , Plac ̧a de Sant Jaume , and Jewish Quarter. Route 2 identifies sites on and close to La Rambla , the main promenade in the city. Route 3 goes from the medieval shipyards to the Board of Commerce to Citadel Park. Route 4...

  2. Time and myth: the Argonauts in Ljubljana

    Directory of Open Access Journals (Sweden)

    Ana María Sánchez Tarrío

    2012-12-01

    Full Text Available This papers gives a breif overview of research in its initial phases, which examines, from the perspective of the construction of national identity, the traditional theme of the enduring and timeless nature of Classical myths and in particular the ancient myth, which is the subject of Borges’s sharp irony in his short-story “The immortal”. The reception of the Argonauts myth in Slovenian culture, initiated by the work of Janez Vajkard or Johann Weichard Freiherr von Valvasor (1641–1693, offers a significant case-study, which also highlights the relevance of Humanist and Baroque culture in the critical history of European nationalism. Writing before the emergence in Europe of the Hegelian conception of “Volkgeist”, the polymath writer applied a humanistic approach to patriotic themes, revealing Slovene culture, hybrid from its origins, to the wider world. A characteristic feature of his approach was the fusion of earlier textual tradition with contemporary oral material. Both in Slovenia and in the rest of Europe the comparison of the nineteenth century treatment of material dealing with national identity with its earlier treatment and transmission by humanist writers highlights the importance of the 16th and 17th centuries in the configuration of the different national faces of Europe as well as the significant role of common Greek and Latin roots. As a result, the myth of the Argonauts in Ljubljana, against the backdrop of idealistic or essentialist nationalist faiths, has the not inconsiderable virtue of underscoring the contaminatio that is characteristic of the construction of national identity.

  3. A bacterial Argonaute with noncanonical guide RNA specificity.

    Science.gov (United States)

    Kaya, Emine; Doxzen, Kevin W; Knoll, Kilian R; Wilson, Ross C; Strutt, Steven C; Kranzusch, Philip J; Doudna, Jennifer A

    2016-04-12

    Eukaryotic Argonaute proteins induce gene silencing by small RNA-guided recognition and cleavage of mRNA targets. Although structural similarities between human and prokaryotic Argonautes are consistent with shared mechanistic properties, sequence and structure-based alignments suggested that Argonautes encoded within CRISPR-cas [clustered regularly interspaced short palindromic repeats (CRISPR)-associated] bacterial immunity operons have divergent activities. We show here that the CRISPR-associated Marinitoga piezophila Argonaute (MpAgo) protein cleaves single-stranded target sequences using 5'-hydroxylated guide RNAs rather than the 5'-phosphorylated guides used by all known Argonautes. The 2.0-Å resolution crystal structure of an MpAgo-RNA complex reveals a guide strand binding site comprising residues that block 5' phosphate interactions. Using structure-based sequence alignment, we were able to identify other putative MpAgo-like proteins, all of which are encoded within CRISPR-cas loci. Taken together, our data suggest the evolution of an Argonaute subclass with noncanonical specificity for a 5'-hydroxylated guide. PMID:27035975

  4. Research reactors in Austria - Present situation

    International Nuclear Information System (INIS)

    In the past decades Austria operated three research reactors, the 10 MW ASTRA reactor at Seibersdorf, the 250 kW TRIGA reactor at the Atominstitut and the 1 kW Argonaut reactor at the Technical University in Graz. Since the shut down of the ASTRA on July 31th, 1999 and its immediate decommissioning reactor and the shut down of the Argonaut reactor in Graz on August 31st, 2004 only one reactor remains operational for keeping nuclear competence in Austria which is the 250 kW TRIGA Mark II reactor. (author)

  5. @City: technologising Barcelona

    Directory of Open Access Journals (Sweden)

    Rojas, Jesús

    2007-05-01

    Full Text Available This article is about the concept of the contemporary city - the influence that technology has when one thinks about, plans and lives in a city. The conjunction of technology and city reformulates customs and social practices; it can even determine the way one constitutes one's own identity. One can see how close the relation is between technology (specifically, TICS and the structures of the city in a wide variety of situations: in social interactions on the street, in transport, and in ways of buying, of working and entertainment. "@City" is a concept that very well reflects the emergent properties of a current city, that is, the coexistence of a physical and a virtual urban space. The "22@Barcelona" project attempts to bring together different types of spaces. By combining the physical with the virtual, 22@Barcelona, as a neighborhood of @City, creates an uncertain and blurred border between both spaces.The article also examines the impact that these spaces have on the psycho-social processes involved in the daily life of a traditionally working-class neighborhood, now strongly limited by technological boundaries.

  6. Argonaute of the archaeon Pyrococcus furiosus is a DNA-guided nuclease that targets cognate DNA

    OpenAIRE

    Swarts, Daan C.; Hegge, Jorrit W.; Hinojo, Ismael; Shiimori, Masami; Ellis, Michael A.; Dumrongkulraksa, Justin; Terns, Rebecca M.; Terns, Michael P.; van der Oost, John

    2015-01-01

    Functions of prokaryotic Argonautes (pAgo) have long remained elusive. Recently, Argonautes of the bacteria Rhodobacter sphaeroides and Thermus thermophilus were demonstrated to be involved in host defense. The Argonaute of the archaeon Pyrococcus furiosus (PfAgo) belongs to a different branch in the phylogenetic tree, which is most closely related to that of RNA interference-mediating eukaryotic Argonautes. Here we describe a functional and mechanistic characterization of PfAgo. Like the bac...

  7. Domain motions of Argonaute, the catalytic engine of RNA interference

    Directory of Open Access Journals (Sweden)

    Wall Michael E

    2007-11-01

    Full Text Available Abstract Background The Argonaute protein is the core component of the RNA-induced silencing complex, playing the central role of cleaving the mRNA target. Visual inspection of static crystal structures already has enabled researchers to suggest conformational changes of Argonaute that might occur during RNA interference. We have taken the next step by performing an all-atom normal mode analysis of the Pyrococcus furiosus and Aquifex aeolicus Argonaute crystal structures, allowing us to quantitatively assess the feasibility of these conformational changes. To perform the analysis, we begin with the energy-minimized X-ray structures. Normal modes are then calculated using an all-atom molecular mechanics force field. Results The analysis reveals low-frequency vibrations that facilitate the accommodation of RNA duplexes – an essential step in target recognition. The Pyrococcus furiosus and Aquifex aeolicus Argonaute proteins both exhibit low-frequency torsion and hinge motions; however, differences in the overall architecture of the proteins cause the detailed dynamics to be significantly different. Conclusion Overall, low-frequency vibrations of Argonaute are consistent with mechanisms within the current reaction cycle model for RNA interference.

  8. Nuevo estadio, en Barcelona

    Directory of Open Access Journals (Sweden)

    Soteras Mauri, J.

    1959-07-01

    Full Text Available El fútbol, en su paso de deporte a espectáculo deportivo, ha traído, como consecuencia, un mayor arrastre de las masas hacia' los recintos de juego. Debido a ello, todos los clubs españoles se han visto en la necesidad de ampliar o construir de nuevo sus instalaciones deportivas para poder albergar a esta ingente riada de espectadores. El Club de Fútbol Barcelona ha terminado recientemente la primera fase de su nuevo estadio con un aforo provisional de noventa mil espectadores y que, cuando esté acabado, tendrá capacidad para ciento cincuenta mil; o sea: será uno de los mayores del mundo. El proyecto ha sido estudiado minuciosamente, no sólo en esencia, sino en potencia, ya que el nuevo estadio Gamper se ha incorporado a la panorámica de la ciudad como uno de sus elementos característicos por razón de su masa, aislamiento y singularidad.

  9. Analysis of small RNA-Argonaute complexes in different organisms

    OpenAIRE

    Dueck, Anne

    2015-01-01

    MicroRNAs (miRNAs) are small, non-coding RNAs of 20-24 nt in length. They are bound by members of the Argonaute protein family and play important roles in various processes including development, cellular homeostasis or response to external stimuli. Mis-regulations of miRNAs cause diseases such as cancers. In several chapters, this thesis describes miRNA profiles, miRNA and Argonaute protein characteristics as well as the de novo description of miRNAs and small RNAs in different cellular and ...

  10. NEWS: GIREP in Barcelona

    Science.gov (United States)

    Dobson, Ken

    2000-11-01

    The 18th biannual conference of GIREP was held in Barcelona from 27 August to 1 September 2000. GIREP stands for Groupe International de Recherche sur l'Enseignement de la Physique. Some 400 delegates from 53 countries attended the conference, whose main concern was Physics Teacher Education beyond 2000. All contributions had to made in English. A conference like this needs to be singularly interesting to keep delegates away from the sunsoaked attractions and delights of one of the most exciting cities in the world - even if some of the excitement comes from wondering whether or not you are going to get your pocket picked. A typical conference day begins with two or three plenary lectures in the morning, with the afternoon given over to a set of nine parallel sessions. These sessions consisted of tightly timetabled 20 minute talks or other types of presentation. This meant that even the most dedicated delegate could get to little more than 10% of the over 200 sessions that were on offer in the afternoons. The event was organized by Catalonian locals working at the conference site, the Universitat Autonoma de Barcelona, and was superbly smooth. The list of organizations supporting the conference is too long to record, but ranged from the European Commission to Barcelona Science Museum. The UK can boast (if that is the right word) just 11 paid-up members of GIREP, which at about £10 per annum is hardly an expensive club - next year it goes up to 20 Euros - and the fee is worth it for the excellently produced book or CD-ROM of the conference proceedings. These contain a great deal of wisdom, plus the fair amount of infuriating rubbish that tends to be generated by educational research. I write here with all the prejudices of an aged ex-teacher, of course. The first morning lecture was given by Jon Ogborn, who used his recent work as organizer of the IoP post-16 Initiative to give some details of the Advancing Physics AS and A2 and make some general points about

  11. Barcelona(s Cidade dos projectos ou projectos da cidade?

    Directory of Open Access Journals (Sweden)

    Margarida Queirós

    2010-12-01

    Full Text Available Barcelona(s. A city of many Projects, or projects for thecity? The international image of Barcelona has come to be associated with an innovative urban model known as the “Barcelona model”, which dates back to the 1980s. This model is not limited to such central aspects of urban planning as public policies and new economic strategies. Instead, some of its key features are concerned withsocial inclusion, urban culture and citizen participation. However, the model itself has evolved over time and has been the object of heated debates and controversy. The aim of the article is to discuss this model and some of the main praises and criticisms it raised. This is done with a view to contributing to the debate around the following challenge: how are we to achieve an adequate balance between short-term projects and long-term public and private urban planning strategies, as well as between public leadership and social consensus? The authors of the articles included in this issue ofFinisterra – for which this article also serves as an introduction – have undertaken substantial research on the political, economic and social processes that drive this city and its metropolitan area. They highlight some of the complex situations that arise at various scales within the context of this model and they discuss their various consequences.

  12. Argonaute proteins: potential biomarkers for human colon cancer

    International Nuclear Information System (INIS)

    Although Argonaute proteins are considered to play important roles in stem cell self-renewal, RNA interference (RNAi) and translational regulation, relatively little is known about their functions in human disease. In this study, we investigated the expression of eight members of human Argonaute family in colon cancer and identified their potential roles in tumor development and progression. Antibodies against human Argonaute proteins were prepared by immunizing rabbits with synthetic peptides derived from the sequences of Argonaute members. Then we constructed a tissue microarray containing 75 specimens from colon cancer and 75 specimens from adjacent non-cancer tissue, and assayed eight different proteins (EIF2C1, EIF2C2, EIF2C3, EIF2C4, PIWIL1, PIWIL2, PIWIL3 and PIWIL4) by immunohistochemistry on consecutive formalin-fixed tissue microarray sections. The expression of EIF2C1-4 and PIWIL1-4 was significantly higher in tumorous tissue than in adjacent tissue. Notably, a significant correlation was observed between the positive expression of EIF2C2, EIF2C3, EIF2C4, PIWIL4 and the presence of distant metastasis. Logistic regression analysis revealed that an increased expression of EIF2C1 and PIWIL2 was significantly associated with occurrence of colon cancer tissue compared with non-cancer tissue. Argonaute proteins are overexpressed in colon cancer relative to adjacent non-cancer tissue. The expression of EIF2C2-4 and PIWIL4 appears increased in advanced tumors with distant metastasis, suggesting it may promote tumor invasion. Furthermore, EIF2C1 and PIWIL2 might represent novel colon cancer markers with early diagnostic significance

  13. Identification and characterization of Argonaute gene family and meiosis-enriched Argonaute during sporogenesis in maize

    Institute of Scientific and Technical Information of China (English)

    Zuxin Zhang

    2014-01-01

    Argonaute (AGO) proteins play a key role in regulation of gene expression through smal RNA‐directed RNA cleavage and translational repression, and are essential for multiple developmental processes. In the present study, 17 AGO genes of maize (Zea mays L., ZmAGOs) were identified using a Hidden Markov Model and validated by rapid amplifica-tion of cDNA ends assay. Subsequently, quantitative PCR revealed that expressions of these genes were higher in reproductive than in vegetative tissues. AGOs presented five temporal and spatial expression patterns, which were likely modulated by DNA methylation, 50‐untranslated exons and microRNA‐mediated feedback loops. Intriguingly, ZmAGO18b was highly expressed in tassels during meiosis. Furthermore, in situ hybridization and immunofluorescence showed that ZmA- GO18b was enriched in the tapetum and germ cel s in meiotic anthers. We hypothesized that ZmAGOs are highly expressed in reproductive tissues, and that ZmAGO18b is a tapetum and germ cel‐specific member of the AGO family in maize.

  14. DNA-guided DNA interference by a prokaryotic Argonaute

    OpenAIRE

    Swarts, Daan C.; Jore, Matthijs M.; Westra, Edze R.; Zhu, Yifan; Janssen, Jorijn H.; Snijders, Ambrosius P.; Wang, Yanli; Patel, Dinshaw J.; Berenguer, José; Brouns, Stan J. J.; van der Oost, John

    2014-01-01

    RNA interference is widely distributed in eukaryotes and has a variety of functions, including antiviral defence and gene regulation1,2. All RNA interference pathways use small single-stranded RNA (ssRNA) molecules that guide proteins of the Argonaute (Ago) family to complementary ssRNA targets: RNA-guided RNA interference1,2. The role of prokaryotic Ago variants has remained elusive, although bioinformatics analysis has suggested their involvement in host defence3. Here we demonstrate that A...

  15. ATLAS Overview Week 2009 Barcelona

    CERN Multimedia

    Claudia Marcelloni

    2009-01-01

    From October 5th to October 9th about 400 physicists from the ATLAS Collaboration met in Barcelona (Catalonia) to discuss the status of the experiment. The event was organized by the Institut de Física d'Altes Energies (IFAE), a member of the ATLAS Collaboration. Besides the Scientific program, few social events were organized, such as Reception at the Palau de Pedralbes, a visit to the Fundacio Joan Miro and a social dinner at Maremagnunm hall.

  16. de Barcelona 1986-2001

    Directory of Open Access Journals (Sweden)

    Isabel Pujadas Rúbies

    2005-01-01

    Full Text Available El curso de vida de los hogares y de las personas van acompañados de cambios residenciales cada vez más frecuentes en las grandes áreas metropolitanas. Este artículo toma la Región Metropolitana de Barcelona como ejemplo para describir cómo los cambios sociodemográficos en los últimos decenios y los procesos de movilidad residencial inciden en la formación de un modelo territorial de los distintos tipos de hogares en las regiones metropolitanas.

  17. Effects of Argonaute on Gene Expression in Thermus thermophilus.

    Directory of Open Access Journals (Sweden)

    Daan C Swarts

    Full Text Available Eukaryotic Argonaute proteins mediate RNA-guided RNA interference, allowing both regulation of host gene expression and defense against invading mobile genetic elements. Recently, it has become evident that prokaryotic Argonaute homologs mediate DNA-guided DNA interference, and play a role in host defense. Argonaute of the bacterium Thermus thermophilus (TtAgo targets invading plasmid DNA during and after transformation. Using small interfering DNA guides, TtAgo can cleave single and double stranded DNAs. Although TtAgo additionally has been demonstrated to cleave RNA targets complementary to its DNA guide in vitro, RNA targeting by TtAgo has not been demonstrated in vivo.To investigate if TtAgo also has the potential to control RNA levels, we analyzed RNA-seq data derived from cultures of four T. thermophilus strain HB27 variants: wild type, TtAgo knockout (Δago, and either strain transformed with a plasmid. Additionally we determined the effect of TtAgo on expression of plasmid-encoded RNA and plasmid DNA levels.In the absence of exogenous DNA (plasmid, TtAgo presence or absence had no effect on gene expression levels. When plasmid DNA is present, TtAgo reduces plasmid DNA levels 4-fold, and a corresponding reduction of plasmid gene transcript levels was observed. We therefore conclude that TtAgo interferes with plasmid DNA, but not with plasmid-encoded RNA. Interestingly, TtAgo presence stimulates expression of specific endogenous genes, but only when exogenous plasmid DNA was present. Specifically, the presence of TtAgo directly or indirectly stimulates expression of CRISPR loci and associated genes, some of which are involved in CRISPR adaptation. This suggests that TtAgo-mediated interference with plasmid DNA stimulates CRISPR adaptation.

  18. RNA Polymerase V transcription guides ARGONAUTE4 to chromatin

    OpenAIRE

    Wierzbicki, Andrzej T.; Ream, Thomas; Haag, Jeremy R.; Pikaard, Craig S.

    2009-01-01

    Summary Retrotransposons and repetitive DNA elements in eukaryotes are silenced by small RNA-directed heterochromatin formation. In Arabidopsis, this process involves 24 nt siRNAs that bind to ARGONAUTE4 (AGO4) and facilitate the targeting of complementary loci1,2 via unknown mechanisms. Nuclear RNA Polymerase V is an RNA silencing enzyme recently shown to generate noncoding transcripts at loci silenced by 24nt siRNAs3. We show that AGO4 physically interacts with these Pol V transcripts and i...

  19. A multitasking Argonaute: exploring the many facets of C. elegans CSR-1.

    Science.gov (United States)

    Wedeles, Christopher J; Wu, Monica Z; Claycomb, Julie M

    2013-12-01

    While initial studies of small RNA-mediated gene regulatory pathways focused on the cytoplasmic functions of such pathways, identifying roles for Argonaute/small RNA pathways in modulating chromatin and organizing the genome has become a topic of intense research in recent years. Nuclear regulatory mechanisms for Argonaute/small RNA pathways appear to be widespread, in organisms ranging from plants to fission yeast, Caenorhabditis elegans to humans. As the effectors of small RNA-mediated gene regulatory pathways, Argonaute proteins guide the chromatin-directed activities of these pathways. Of particular interest is the C. elegans Argonaute, chromosome segregation and RNAi deficient (CSR-1), which has been implicated in such diverse functions as organizing the holocentromeres of worm chromosomes, modulating germline chromatin, protecting the genome from foreign nucleic acid, regulating histone levels, executing RNAi, and inhibiting translation in conjunction with Pumilio proteins. CSR-1 interacts with small RNAs known as 22G-RNAs, which have complementarity to 25 % of the protein coding genes. This peculiar Argonaute is the only essential C. elegans Argonaute out of 24 family members in total. Here, we summarize the current understanding of CSR-1 functions in the worm, with emphasis on the chromatin-directed activities of this ever-intriguing Argonaute. PMID:24178449

  20. Characterization of Argonaute-related small RNA pathways in Caenorhabditis elegans

    OpenAIRE

    Batista, Pedro Jorge de Oliveira Rodrigues

    2010-01-01

    Tese de doutoramento, Biologia (Genética), Universidade de Lisboa, Faculdade de Ciências, 2011 In Small-RNA-mediated pathways, small RNAs engage a protein of the Argonaute family and utilize base-pairing interactions to identify and regulate complementary genetic information. My research has focused on understanding how diverse classes of small RNAs in the model organism Caenorhabditis elegans interact with specific members of the Argonaute protein family to carry out unique bi...

  1. La sederia a Barcelona al segle XV

    OpenAIRE

    Stojak, Ivana

    2013-01-01

    La tesi investiga el desenvolupament de la manufactura de la seda a Barcelona durant el segle XV, especialment des del punt de vista del treball. Els objectius principals de la tesi han estat investigar la importància que havia tingut la manufactura de la seda a Barcelona durant el XV, quant al seu abast , el nombre d'artesans que s'havien dedicat a aquesta fabricació, i el seu desenvolupament, comprovant si realment es tractava d'una manufactura marginal . També s'ha procurat analitza...

  2. Extreme flash floods in Barcelona County

    Directory of Open Access Journals (Sweden)

    A. Barrera

    2005-01-01

    Full Text Available In this paper the catastrophic and extraordinary floods occurring in Barcelona County (Catalonia, NE Spain are studied, in order to characterise the temporal evolution of extreme flash floods in that area and their main features. These events usually cause economical losses and major problems for undertaking daily activity in Barcelona city. This kind of floods is a very common feature in the North-east of Spain and they are recorded every year in some point of Catalonia. This contribution also shows the frequency of those events, within the framework of all the floods that have occurred in Barcelona since the 14th century, but also describes the flooded area, urban evolution, impacts and the weather conditions for any of most severe events. The evolution of flood occurrence shows the existence of oscillations in the earlier and later modern age periods that can be attributed to climatic variability, evolution of the perception threshold and changes in vulnerability. A great increase of vulnerability can be assumed for the period 1850-1900. The analysis of the time evolution for the Barcelona rainfall series (1854-2000 shows that no trend exists, although, due to the changes in urban planning, flash-floods impact has changed over this time. The number of catastrophic flash floods has diminished, although the extraordinary ones have increased.

  3. Robust RNAi enhancement via human Argonaute-2 overexpression from plasmids, viral vectors and cell lines

    OpenAIRE

    Börner, Kathleen; Niopek, Dominik; Cotugno, Gabriella; Kaldenbach, Michaela; Pankert, Teresa; Willemsen, Joschka; Zhang, Xian; Schürmann, Nina; Mockenhaupt, Stefan; Serva, Andrius; Hiet, Marie-Sophie; Wiedtke, Ellen; Castoldi, Mirco; Starkuviene, Vytaute; Erfle, Holger

    2013-01-01

    As the only mammalian Argonaute protein capable of directly cleaving mRNAs in a small RNA-guided manner, Argonaute-2 (Ago2) is a keyplayer in RNA interference (RNAi) silencing via small interfering (si) or short hairpin (sh) RNAs. It is also a rate-limiting factor whose saturation by si/shRNAs limits RNAi efficiency and causes numerous adverse side effects. Here, we report a set of versatile tools and widely applicable strategies for transient or stable Ago2 co-expression, which overcome thes...

  4. Argonautes promote male fertility and provide a paternal memory of germline gene expression in C. elegans

    OpenAIRE

    Conine, Colin C.; Moresco, James J.; Gu, Weifeng; Shirayama, Masaki; Conte, Darryl; Yates, John R.; Mello, Craig C

    2013-01-01

    During each life cycle germ cells preserve and pass on both genetic and epigenetic information. In C. elegans, the ALG-3/4 Argonaute proteins are expressed during male gametogenesis and promote male fertility. Here we show that the CSR-1 Argonaute functions with ALG-3/4 to positively regulate target genes required for spermiogenesis. Our findings suggest that ALG-3/4 functions during spermatogenesis to amplify a small-RNA signal that represents an epigenetic memory of male-specific gene expre...

  5. Survey of research reactors

    International Nuclear Information System (INIS)

    A survey of reasearch reactors based on the IAEA Nuclear Research Reactor Data Base (RRDB) was done. This database includes information on 273 operating research reactors ranging in power from zero to several hundred MW. From these 273 operating research reactors 205 reactors have a power level below 5 MW, the remaining 68 reactors range from 5 MW up to several 100 MW thermal power. The major reactor types with common design are: Siemens Unterrichtsreaktors, 1.2 Argonaut reactors, Slowpoke reactors, the miniature neutron source reactors, TRIGA reactors, material testing reactors and high flux reactors. Technical data such as: power, fuel material, fuel type, enrichment, maximum neutron flux density and experimental facilities for each reactor type as well as a description of their utilization in physics and chemistry, medicine and biology, academic research and teaching, training purposes (students and physicists, operating personnel), industrial application (neutron radiography, silicon neutron transmutation doping facilities) are provided. The geographically distribution of these reactors is also shown. As conclusions the author discussed the advantages (low capital cost, low operating cost, low burn up, simple to operate, safe, less restrictive containment and sitting requirements, versatility) and disadvantages (lower sensitivity for NAA, limited radioisotope production, limited use of neutron beams, limited access to the core, licensing) of low power research reactors. 24 figs., refs. 15, Tab. 1 (nevyjel)

  6. Barcelona - Talent Latent 09 / Ahto Sooaru

    Index Scriptorium Estoniae

    Sooaru, Ahto

    2010-01-01

    Fotonäitusest "Talent Latent 09" Barcelonas Arts Santa Monica kunstikeskuses. Loetletud näitusel eksponeeritud fotode autorid. Pikemalt Rafael Milach'i (sünd. 1978), Lucia Ganieva, Javier Marquerie Thomas'i (sünd. 1986), Amaury da Cunha (sünd. 1976) töödest. Lühidalt ka teistest näitustest Arts Santa Monica kunstikeskuses

  7. Evaluation of performance of Son Tek Argonaut acoustic doppler velocity log in tow tank and sea

    Digital Repository Service at National Institute of Oceanography (India)

    Joseph, A.; Madhan, R.; Mascarenhas, A.A.M.Q.; Desai, R.G.P.; VijayKumar, K.; Dias, M.; Tengali, S.; Methar, A.

    Performance of a 500-kHz, 3-beam downward-looking Sontex Argonaut acoustic Doppler velocity log (DVL) based on measurements at tow-tank and sea is addressed. Its accuracy and linearity under tow-tank measurements were largely scattered...

  8. ARGONAUTE10 and ARGONAUTE1 regulate the termination of floral stem cells through two microRNAs in Arabidopsis.

    Directory of Open Access Journals (Sweden)

    Lijuan Ji

    2011-03-01

    Full Text Available Stem cells are crucial in morphogenesis in plants and animals. Much is known about the mechanisms that maintain stem cell fates or trigger their terminal differentiation. However, little is known about how developmental time impacts stem cell fates. Using Arabidopsis floral stem cells as a model, we show that stem cells can undergo precise temporal regulation governed by mechanisms that are distinct from, but integrated with, those that specify cell fates. We show that two microRNAs, miR172 and miR165/166, through targeting APETALA2 and type III homeodomain-leucine zipper (HD-Zip genes, respectively, regulate the temporal program of floral stem cells. In particular, we reveal a role of the type III HD-Zip genes, previously known to specify lateral organ polarity, in stem cell termination. Both reduction in HD-Zip expression by over-expression of miR165/166 and mis-expression of HD-Zip genes by rendering them resistant to miR165/166 lead to prolonged floral stem cell activity, indicating that the expression of HD-Zip genes needs to be precisely controlled to achieve floral stem cell termination. We also show that both the ubiquitously expressed ARGONAUTE1 (AGO1 gene and its homolog AGO10, which exhibits highly restricted spatial expression patterns, are required to maintain the correct temporal program of floral stem cells. We provide evidence that AGO10, like AGO1, associates with miR172 and miR165/166 in vivo and exhibits "slicer" activity in vitro. Despite the common biological functions and similar biochemical activities, AGO1 and AGO10 exert different effects on miR165/166 in vivo. This work establishes a network of microRNAs and transcription factors governing the temporal program of floral stem cells and sheds light on the relationships among different AGO genes, which tend to exist in gene families in multicellular organisms.

  9. Rearrangement of Barcelona serveis municipals customer services

    OpenAIRE

    Fullana Roger, Cristina

    2015-01-01

    This document presents the report for the Final Degree Thesis. The subject of the project is the Rearrangement of the Customer Services of the public company Barcelona Serveis Municipals (B:SM). The project is classified in the Management area and it details the definition and adaptation process of a new model in the customer services of B:SM. The origin of the project stands on the opening of the new Calàbria facilities. The purpose of the project is to identify the problems in the curren...

  10. Hotel W Barcelona: style department (housekeeping)

    OpenAIRE

    Major, Teresa Alexandrina Martins Ferreira

    2014-01-01

    Este relatório pretende descrever a experiência proporcionada pelo estágio efetuado no departamento de Style do hotel W Barcelona, enquanto supervisor de housekeeping. Para melhor conseguir definir esta experiência, é feita uma caraterização da entidade de acolhimento, referindo os elementos diferenciadores associados à brand do hotel, assim como aspetos gerais da cadeia hoteleira a que esta está liga. Segue-se uma revisão de literatura onde é explorada a descrição do departame...

  11. Desplegament Wi-Fi per la Barcelona World Race

    OpenAIRE

    Ruiz Fernàndez, Enric

    2015-01-01

    Treball sobre el desplegament d'una xarxa Wi-Fi en una zona de Barcelona per donar un servei d'Internet. Trabajo sobre el despliegue de una red Wi-Fi en una zona de Barcelona para dar un servicio de Internet. Bachelor thesis for the Telecommunication Technologies program on Telematics.

  12. Research reactors in Argentina

    International Nuclear Information System (INIS)

    Argentine Nuclear Development started in early fifties. In 1957, it was decided to built the first a research reactor. RA-1 reactor (120 kw, today licensed to work at 40 kW) started operation in January 1958. Originally RA-1 was an Argonaut (American design) reactor. In early sixties, the RA-1 core was changed. Fuel rods (20% enrichment) was introduced instead the old Argonaut core design. For that reason, a critical facility named RA-0 was built. After that, the RA-3 project started, to build a multipurpose 5 MW nuclear reactor MTR pool type, to produce radioisotopes and research. For that reason and to define the characteristics of the RA-3 core, another critical facility was built, RA-2. Initially RA-3 was a 90 % enriched fuel reactor, and started operation in 1967. When Atucha I NPP project started, a German design Power Reactor, a small homogeneous reactor was donated by the German Government to Argentina (1969). This was RA-4 reactor (20% enrichment, 1W). In 1982, RA-6 pool reactor achieved criticality. This is a 500 kW reactor with 90% enriched MTR fuel elements. In 1990, RA-3 started to operate fueled by 20% enriched fuel. In 1997, the RA-8 (multipurpose critical facility located at Pilcaniyeu) started to operate. RA-3 reactor is the most important CNEA reactor for Argentine Research Reactors development. It is the first in a succession of Argentine MTR reactors built by CNEA (and INVAP SE ) in Argentina and other countries: RA-6 (500 kW, Bariloche-Argentina), RP-10 (10MW, Peru), NUR (500 kW, Algeria), MPR (22 MW, Egypt). The experience of Argentinian industry permits to compete with foreign developed countries as supplier of research reactors. Today, CNEA has six research reactors whose activities have a range from education and promotion of nuclear activity, to radioisotope production. For more than forty years, Argentine Research Reactors are working. The experience of Argentine is important, and argentine firms are able to compete in the design and

  13.  TEHE LEGEND OF ARGONAUTS: THE REALITIES BEHIND THE MYTH AND COLKHIS

    OpenAIRE

    EMİR, Osman

    2009-01-01

    It is widely accepted by the researchers that it is necessary to benefit from legends and myths which form the bases of oral literature in order to have knowledge about to period in which writing wasn’t known. Although myths and legends seem to be fictitious tales, in its core there are historical facts and narrations. Argonauts and Golden Fleece legends are mythological narration of Helen Colonization action in which some adventurers wanted to have the untouched natural resources of the sout...

  14. A viral suppressor protein inhibits host RNA silencing by hooking up with Argonautes

    OpenAIRE

    Jin, Hailing; Zhu, Jian-Kang

    2010-01-01

    RNA viruses are particularly vulnerable to RNAi-based defenses in the host, and thus have evolved specific proteins, known as viral suppressors of RNA silencing (VSRs), as a counterdefense. In this issue of Genes & Development, Azevedo and colleagues (pp. 904–915) discovered that P38, the VSR of Turnip crinkle virus, uses its glycine/tryptophane (GW) motifs as an ARGONAUTE (AGO) hook to attract and disarm the host's essential effector of RNA silencing. Several GW motif-containing cellular pro...

  15. Argonaute-2 regulates the proliferation of adult stem cells in planarian

    Institute of Scientific and Technical Information of China (English)

    Yong-Qin Li; An Zeng; Xiao-Shuai Han; Chen Wang; Ge Li; Zhen-Chao Zhang; Jian-Yong Wang; Yong-Wen Qin; Qing Jing

    2011-01-01

    Dear Editor,Planarian Schmidtea mediterranea has extraordinary regeneration capabilities due to the abundance of adult stem cells (ASCs) known as neoblasts,which make planarian a powerful in vivo system to study ASC biology [ 1 ].The Argonaute (AGO) family proteins are defined by the presence of Piwi-Argonaute-Zwille (PAZ)) and PIWI domains [2],and mediate silencing via cleavage of mRNAs [3] or inhibition of translation [4].The AGO family proteins fall into two subfamilies,one named after Arabidopsis Argonaute and the other after Drosophila PIWI [5].In most organisms investigated so far,PIWI proteins bind Piwi-interacting RNAs (piRNAs) and are functionally involved in the regulation of germ cells [6,7].By contrast,AGO proteins have distinct roles in the smallRNA-mediated gene silencing pathway.In Drosophila,AGO1 has been illustrated to be engaged in the miRNA pathway,while AGO2 plays an important role in the siRNA-mediated gene regulation [4].

  16. Expression of human ARGONAUTE 2 inhibits endogenous microRNA activity in Arabidopsis

    Directory of Open Access Journals (Sweden)

    Ira eDeveson

    2013-04-01

    Full Text Available Plant and animal microRNA (miRNA pathways share many analogous components, the ARGONAUTE (AGO proteins being foremost among them. We sought to ascertain the degree of functional conservation shared by Homo sapiens ARGONAUTE 2 (HsAGO2 and Arabidopsis thaliana ARGONAUTE 1 (AtAGO1, which are the predominant AGO family members involved with miRNA activity in their respective species. Transgenic Arabidopsis plants expressing HsAGO2 were indistinguishable from counterparts over-expressing AtAGO1, each group exhibiting the morphological and molecular hallmarks of miRNA-pathway loss-of-function alleles. However, unlike AtAGO1, HsAGO2 was unable to rescue the ago1-27 allele. We conclude that, despite the evolutionary gulf between them, HsAGO2 is likely capable of interacting with some component/s of the Arabidopsis miRNA pathway, thereby perturbing its operation, although differences have arisen such that HsAGO2 alone is insufficient to confer efficient silencing of miRNA targets in planta.

  17. Centro Carvis Barcelona España

    Directory of Open Access Journals (Sweden)

    Danés Tejedor, Alberto

    1976-10-01

    Full Text Available This building has been designed for an advertising firm and was constructed on a 2,600 m2 plot, situated in an urbanization in Esplugas, near Barcelona. The project is made up of three terrace shaped levels, due to the slope of the ground, which are connected by means of patios whereby a volumetric complex is achieved that is integrated into its surrounding environment in a natural way. The structure is of reinforced concrete with standardized pillars placed in a bireticular manner whereby the construction problems were solved in an easy way. An appropriate interior decoration provides a pleasant working atmosphere.Este edificio, proyectado para albergar las instalaciones de una agencia de publicidad, fue construido en una parcela de 2.600 m2 situada en una urbanización de la localidad de Esplugas, cerca de Barcelona. La obra se desarrolló en tres niveles, comunicados visualmente mediante unos patios interiores que sirven de unión espacial entre las diferentes plantas. Estas, en las que se distribuyen convenientemente las distintas secciones que constituyen la organización, se dispusieron escalonadas para adaptarlas al desnivel del terreno, dando como resultado un conjunto volumétrico integrado de forma natural en su entorno. La estructura es de hormigón armado, con pilares normalizados en disposición birreticular, lo que permitió solucionar los problemas constructivos de forma sencilla. Una decoración apropiada y unas eficaces instalaciones ayudan a crear un ambiente de trabajo propicio y muy agradable.

  18. Seismic damage assessment of waffled slabs RC buildings of Barcelona

    OpenAIRE

    Moreno González, Rosángel; Bairán García, Jesús Miguel

    2011-01-01

    The seismic damage of waffled-slabs reinforced concrete buildings in the city of Barcelona (Spain) is evaluated using Risk-UE methodology, which enables obtaining fragility curves of the structure in a simplified manner through capacity curves. The seismic hazard is described by means of the reduced 5%-damped elastic response spectrum specific to Barcelona. Capacity curves are obtained using a non-linear static analysis and are used to obtain the performance point and probability damage matri...

  19. The sustainability of the Barcelona port enlargement works

    OpenAIRE

    Tarragó, D.; Gens Solé, Antonio; Alonso Pérez de Agreda, Eduardo; Romero Morales, Enrique Edgar; Griell, R.; Estrada, J.L.; Uzcanga, J.

    2011-01-01

    In the Barcelona Port enlargement, currently under construction, part of the new quays are being backfilled with re-used materials such as tunneling waste, rubble from demolitions and dredged soils with poor geotechnical properties. This has resulted in a cost-effective and sustainable construction process that is one of the main goals of the Barcelona Port Authority (APB). A series of control tests have been carried out on the mentioned materials. In addition, dredged soils have been impr...

  20. The pergolas of Barcelona Forum, an example of sustainable architecture; Las pergonas de Barcelona Ejemplo de arquitectura sostenible

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    The use of technologies FV in Barcelona Forum Claims the goal of reducing the greenhouse gases emission to the atmosphere. The pergolas allow reducing the emission of approximately 440 Mg/year of CO{sub 2}.

  1. The C. elegans CSR-1 Argonaute pathway counteracts epigenetic silencing to promote germline gene expression

    OpenAIRE

    Seth, Meetu; Shirayama, Masaki; Gu, Weifeng; Ishidate, Takao; Conte, Darryl; Mello, Craig C

    2013-01-01

    Organisms can develop adaptive sequence-specific immunity by re-expressing pathogen-specific small RNAs that guide gene silencing. For example, the C. elegans PIWI-Argonaute/piRNA pathway recruits RNA-dependent RNA polymerase RdRP to foreign sequences to amplify a trans-generational small RNA-induced epigenetic silencing signal (termed RNAe). Here we provide evidence that in addition to an adaptive memory of silenced sequences, C. elegans can also develop an opposing adaptive memory of expres...

  2. Essential and overlapping functions for mammalian Argonautes in microRNA silencing

    OpenAIRE

    Su, Hong; Trombly, Melanie I.; Chen, Jian; Wang, Xiaozhong

    2009-01-01

    MicroRNA (miRNA) silencing fine-tunes protein output and regulates diverse biological processes. Argonaute (Ago) proteins are the core effectors of the miRNA pathway. In lower organisms, multiple Agos have evolved specialized functions for distinct RNA silencing pathways. However, the roles of mammalian Agos have not been well characterized. Here we show that mouse embryonic stem (ES) cells deficient for Ago1–4 are completely defective in miRNA silencing and undergo apoptosis. In miRNA silenc...

  3. A Novel miRNA Processing Pathway Independent of Dicer Requires Argonaute2 Catalytic Activity

    OpenAIRE

    Cifuentes, Daniel; Xue, Huiling; Taylor, David W.; Patnode, Heather; Mishima, Yuichiro; Cheloufi, Sihem; Ma, Enbo; Mane, Shrikant; Hannon, Gregory J.; Lawson, Nathan D.; Wolfe, Scot A.; Giraldez, Antonio J.

    2010-01-01

    Dicer is a central enzyme in microRNA (miRNA) processing. We identified a Dicer-independent miRNA biogenesis pathway that uses Argonaute2 (Ago2) slicer catalytic activity. In contrast to other miRNAs, miR-451 levels were refractory to dicer loss of function but were reduced in MZago2 (maternal-zygotic) mutants. We found that pre-miR-451 processing requires Ago2 catalytic activity in vivo. MZago2 mutants showed delayed erythropoiesis that could be rescued by wild-type Ago2 or miR-451-duplex bu...

  4. Reactors

    International Nuclear Information System (INIS)

    Purpose: To provide a spray cooling structure wherein the steam phase in a bwr reactor vessel can sufficiently be cooled and the upper cap and flanges in the vessel can be cooled rapidly which kept from direct contaction with cold water. Constitution: An apertured shielding is provided in parallel spaced apart from the inner wall surface at the upper portion of a reactor vessel equipped with a spray nozzle, and the lower end of the shielding and the inner wall of the vessel are closed to each other so as to store the cooling water. Upon spray cooling, cooling water jetting out from the nozzle cools the vapor phase in the vessel and then hits against the shielding. Then the cooling water mostly falls as it is, while partially enters through the apertures to the back of the shielding plate, abuts against stoppers and falls down. The stoppers are formed in an inverted L shape so that the spray water may not in direct contaction with the inner wall of the vessel. (Horiuchi, T.)

  5. Orígenes del Fútbol en Barcelona (1892-1903. | Origins of Fooball in Barcelona (1892-1903.

    Directory of Open Access Journals (Sweden)

    Xavier Torrebadella Flix

    2012-01-01

    Full Text Available This article shows some unpublished data that seek to clarify the origins of football in Spain and particularly in Barcelona. Apart from the influence of the English colony in the dissemination of football, the background of school sport is described and evaluated. It is provided data about football in Barcelona which reveal that before the constitution of the Football Club Barcelona, often considered the first team of the city, there were ten associations that practiced this sport. It emphasizes the importance of the British colony, gyms and sports clubs of Barcelona from 1892 to 1903, to generate the enabling environment that made ​​the modern sport of football triumph, stimulating in turn the context Regenerationism and the emergence of associations sports from the early twentieth century. The research method has focused on historical analysis techniques, with the treatment of the original documentary sources and complemented with historicist indirect sources.ResumenEn este artículo se presentan algunos datos inéditos que pretenden esclarecer los orígenes del fútbol en España y más concretamente en Barcelona. Aparte de la influencia que ejerce la colonia inglesa en la divulgación del fútbol, se describen y se valoran los antecedentes del deporte escolar. Sobre el fútbol en Barcelona se aportan datos que revelan que antes de la constitución del Fútbol Club Barcelona, considerado frecuentemente como el primer equipo de fútbol de la ciudad, existieron una decena de asociaciones que practicaron este deporte. Se acentúa la importancia que tuvo la colonia inglesa, los gimnasios y las sociedades deportivas de Barcelona entre 1892 y 1903, para generar el ambiente favorable que hizo que el fútbol triunfase como deporte moderno, estimulando a su vez el contexto regeneracionista y la emergencia del asociacionismo deportivo de principios del siglo XX. El método de investigación se ha centrado en técnicas de análisis histórico en

  6. A viral suppressor protein inhibits host RNA silencing by hooking up with Argonautes

    KAUST Repository

    Jin, Hailing

    2010-05-01

    RNA viruses are particularly vulnerable to RNAi-based defenses in the host, and thus have evolved specific proteins, known as viral suppressors of RNA silencing (VSRs), as a counterdefense. In this issue of Genes & Development, Azevedo and colleagues (pp. 904-915) discovered that P38, the VSR of Turnip crinkle virus, uses its glycine/tryptophane (GW) motifs as an ARGONAUTE (AGO) hook to attract and disarm the host\\'s essential effector of RNA silencing. Several GW motif-containing cellular proteins are known to be important partners of AGOs in RNA silencing effector complexes in yeast, plants, and animals. The GW motif appears to be a versatile and effective tool for regulating the activities of RNA silencing pathways, and the use of GW mimicry to compete for and inhibit host AGOs may be a strategy used by many pathogens to counteract host RNAi-based defenses. © 2010 by Cold Spring Harbor Laboratory Press.

  7. Empresas familiares de inmigrantes en Barcelona y Montevideo

    OpenAIRE

    Paola Martínez Pérez

    2009-01-01

    El objetivo de este trabajo es observar las diferentes dimensiones que adquiere la familia en las empresas familiares de inmigrantes. En este caso, la propuesta metodológica es analizar, de forma comparativa, la realidad empresarial consolidada del colectivo gallego en Montevideo con las empresas familiares de inmigrantes de reciente creación en el área metropolitana en Barcelona.

  8. Complex esportiu i hotel al Port de Barcelona

    OpenAIRE

    Clèries Vilamajó, Albert

    2010-01-01

    Projecte d'ordenació del Port Vell de Barcelona. Substitució de l'actual Hotel Vela per un nou hotel de 5 estrelles. Substitució dels dos Clubs de natació de la platja de Sant Sebastià per dos nous complexs esportius.

  9. Jean Nouveli supermodernism Barcelonas / Raili Seppänen

    Index Scriptorium Estoniae

    Seppänen, Raili

    2005-01-01

    2005. a. suvel valmivast prantsuse arhitekti Jean Nouveli (sünd. 1945) projekteeritud tornmajast Torre Agbar Barcelonas Avinguda Diagonal 209-211. Abiks hispaania arhitekt Fermin Vazquez arhitektibüroost b720 Arquitectura S.L. Jean Nouveli tuntud projekte. Ill.: J. Nouveli portreefoto, tornmaja välisvaade

  10. China-Spain Investment & Trade Seminar Held in Barcelona

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    @@ On April 24,the China-Spain Investment & Trade Seminar was jointly held in Barcelona,Spain.As the first event of the Chinese Products Promotion Week (Europe),the seminar aims to help the Chinese export enterprises and local governments learn about relevant laws and regulations and product quality standards of the EU.

  11. Geodetic infrastructure at the Barcelona harbour for sea level monitoring

    Science.gov (United States)

    Martinez-Benjamin, Juan Jose; Gili, Josep; Lopez, Rogelio; Tapia, Ana; Pros, Francesc; Palau, Vicenc; Perez, Begona

    2015-04-01

    The presentation is directed to the description of the actual geodetic infrastructure of Barcelona harbour with three tide gauges of different technologies for sea level determination and contribution to regional sea level rise and understanding past and present sea level rise in the Barcelona harbour. It is intended that the overall system will constitute a CGPS Station of the ESEAS (European Sea Level) and TIGA (GPS Tide Gauge Benchmark Monitoring) networks. At Barcelona harbour there is a MIROS radar tide gauge belonging to Puertos del Estado (Spanish Harbours).The radar sensor is over the water surface, on a L-shaped structure which elevates it a few meters above the quay shelf. 1-min data are transmitted to the ENAGAS Control Center by cable and then sent each 1 min to Puertos del Estado by e-mail. The information includes wave forescast (mean period, significant wave height, sea level, etc.This sensor also measures agitation and sends wave parameters each 20 min. There is a GPS station Leica Geosystems GRX1200 GG Pro and antenna AX 1202 GG. The Control Tower of the Port of Barcelona is situated in the North dike of the so-called Energy Pier in the Barcelona harbor (Spain). This tower has different kind of antennas for navigation monitoring and a GNSS permanent station. As the tower is founded in reclaimed land, and because its metallic structure, the 50 m building is subjected to diverse movements, including periodic fluctuations due to temperature changes. In this contribution the 2009, 2011, 2012, 2013 and 2014 the necessary monitoring campaigns are described. In the framework of a Spanish Space Project, the instrumentation of sea level measurements has been improved by providing the Barcelona site with a radar tide gauge Datamar 2000C from Geonica S.L. in June 2014 near an acoustic tide gauge from the Barcelona Harbour installed in 2013. Precision levelling has been made several times in the last two years because the tower is founded in reclaimed land and

  12. miRNA-target chimeras reveal miRNA 3'-end pairing as a major determinant of Argonaute target specificity

    DEFF Research Database (Denmark)

    Moore, Michael J; Scheel, Troels K H; Luna, Joseph M;

    2015-01-01

    microRNAs (miRNAs) act as sequence-specific guides for Argonaute (AGO) proteins, which mediate posttranscriptional silencing of target messenger RNAs. Despite their importance in many biological processes, rules governing AGO-miRNA targeting are only partially understood. Here we report a modified...... AGO HITS-CLIP strategy termed CLEAR (covalent ligation of endogenous Argonaute-bound RNAs)-CLIP, which enriches miRNAs ligated to their endogenous mRNA targets. CLEAR-CLIP mapped ∼130,000 endogenous miRNA-target interactions in mouse brain and ∼40,000 in human hepatoma cells. Motif and structural...... analysis define expanded pairing rules for over 200 mammalian miRNAs. Most interactions combine seed-based pairing with distinct, miRNA-specific patterns of auxiliary pairing. At some regulatory sites, this specificity confers distinct silencing functions to miRNA family members with shared seed sequences...

  13. Poesía de posguerra en Barcelona

    Directory of Open Access Journals (Sweden)

    Manjón-Cabeza Cruz, Dolores

    2008-06-01

    Full Text Available The history of Spanish poetry has refused up to now the poetry written in Barcelona between the final of the Civil War and 1951, the year of the foundation of the so-called «School of Barcelona». In this article there will be drawn some of the general lines of this nearly twelve years of Spanish writing, which where a period of linguistic substitution and cultural ideology, launching years of new editorials and collections, the creation of reviews y rewards, of tertulias and of plentiful poetic creations in Barcelona, the most part of them under the sign of surrealism. The main names of this history should be more or less known (J.R. Masoliver, Cirlot, Garcés, and so on, but their determination in connecting with the best poetry former of the Civil War and outside from Spain, should be worth mentioning for their singularity as well as for the quality of their products.La historia de la poesía de posguerra en España ha ignorado hasta ahora la poesía escrita en Barcelona entre el final de la Guerra Civil y 1951, el año fundacional de la llamada «Escuela de Barcelona». En este artículo se trazan las líneas maestras de esos casi doce años de escritura en castellano, que fueron tiempo de sustitución lingüística y cultural-ideológica, de lanzamiento de nuevas editoriales y colecciones, de creación de revistas y premios, de tertulias y de abundante creación poética en Barcelona, la mayor parte de ella bajo el signo del surrealismo. Los nombres propios de esta historia pueden ser más o menos conocidos (J.R. Masoliver, Cirlot, Garcés, etc. pero su empeño en conectar con lo mejor de las poéticas anteriores a la guerra y con las de fuera de nuestras fronteras es digno de reconocimiento y de atención, tanto por su singularidad como por la calidad de los frutos obtenidos.

  14. DICER-ARGONAUTE2 complex in continuous fluorogenic assays of RNA interference enzymes.

    Directory of Open Access Journals (Sweden)

    Mark A Bernard

    Full Text Available Mechanistic studies of RNA processing in the RNA-Induced Silencing Complex (RISC have been hindered by lack of methods for continuous monitoring of enzymatic activity. "Quencherless" fluorogenic substrates of RNAi enzymes enable continuous monitoring of enzymatic reactions for detailed kinetics studies. Recombinant RISC enzymes cleave the fluorogenic substrates targeting human thymidylate synthase (TYMS and hypoxia-inducible factor 1-α subunit (HIF1A. Using fluorogenic dsRNA DICER substrates and fluorogenic siRNA, DICER+ARGONAUTE2 mixtures exhibit synergistic enzymatic activity relative to either enzyme alone, and addition of TRBP does not enhance the apparent activity. Titration of AGO2 and DICER in enzyme assays suggests that AGO2 and DICER form a functional high-affinity complex in equimolar ratio. DICER and DICER+AGO2 exhibit Michaelis-Menten kinetics with DICER substrates. However, AGO2 cannot process the fluorogenic siRNA without DICER enzyme, suggesting that AGO2 cannot self-load siRNA into its active site. The DICER+AGO2 combination processes the fluorogenic siRNA substrate (Km=74 nM with substrate inhibition kinetics (Ki=105 nM, demonstrating experimentally that siRNA binds two different sites that affect Dicing and AGO2-loading reactions in RISC. This result suggests that siRNA (product of DICER bound in the active site of DICER may undergo direct transfer (as AGO2 substrate to the active site of AGO2 in the DICER+AGO2 complex. Competitive substrate assays indicate that DICER+AGO2 cleavage of fluorogenic siRNA is specific, since unlabeled siRNA and DICER substrates serve as competing substrates that cause a concentration-dependent decrease in fluorescent rates. Competitive substrate assays of a series of DICER substrates in vitro were correlated with cell-based assays of HIF1A mRNA knockdown (log-log slope=0.29, suggesting that improved DICER substrate designs with 10-fold greater processing by the DICER+AGO2 complex can provide a

  15. Urbanismo y ecología en Barcelona

    OpenAIRE

    Martínez Alier, Joan

    1991-01-01

    Este artículo describe el crecimiento de Barcelona hacia el Vallès i el Maresme, con el impulso de las inversiones olímpicas que están provocando el ensanchamiento de la conurbación. El artículo sitúa Barcelona dentro del contexto ecológico-regional, explica que cantidad de energía exosomática y de agua se hace servir, y qué origen tiene. El artículo critica este crecimiento, recordando las ideas de planificación más ecológicas de las primeras décadas de este siglo (por ejemplo, el movimiento...

  16. New mediterranean elements in contemporary housing. The case of Barcelona

    Directory of Open Access Journals (Sweden)

    Vincenzo Paolo Bagnato

    2012-10-01

    Full Text Available In the face of increasing and differentiating the low-cost housing demand and the trend of establishing new paradigms in the contemporary housing design, the architectural investigation has replaced into its disciplinary statement the topic of housing as central question in research and design experimentation. The city of Barcelona has codified in the last years innovative modalities of public management in social housing, offering interesting points of reflection on the idea of housing and of Mediterranean quality in urban, architectural and constructive terms. The paper proposes a key to the reading on the recent experiences of social housing in Barcelona illustrating the different forms through which architecture interprets the relationship between housing and public space, between innovation and constructive tradition.

  17. ATLAS Virtual Visit-Barcelona-03-04-2014

    CERN Multimedia

    he Institut de Fisica d`Altes Energies (IFAE) is a leading high energy physics research institute located in the Autonomous University of Barcelona (UAB), Spain. Among the numerous activities of the institute, IFAE is deeply involved in the research program of the LHC and plays a key role as a member of the ATLAS collaboration. IFAE scientists have regularly been promoting public awareness of science and making informal contributions to science education.

  18. New mediterranean elements in contemporary housing. The case of Barcelona

    OpenAIRE

    2012-01-01

    In the face of increasing and differentiating the low-cost housing demand and the trend of establishing new paradigms in the contemporary housing design, the architectural investigation has replaced into its disciplinary statement the topic of housing as central question in research and design experimentation. The city of Barcelona has codified in the last years innovative modalities of public management in social housing, offering interesting points of reflection on the idea of housing and o...

  19. Commuters' valuation of travel time variability in Barcelona

    OpenAIRE

    Matas i Prat, Anna; Asensio Ruiz de Alda, Francisco Javier

    2007-01-01

    The value given by commuters to the variability of travel times is empirically analysed using stated preference data from Barcelona (Spain). Respondents are asked to choose between alternatives that differ in terms of cost, average travel time, variability of travel times and departure time. Different specifications of a scheduling choice model are used to measure the influence of various socioeconomic characteristics. Our results show that travel time variability.

  20. Innovative milieu, micro firms and local development in Barcelona

    OpenAIRE

    Lladós Masllorens, Josep; Fernández Ardèvol, Mireia; Vilaseca i Requena, Jordi

    2008-01-01

    Peer-reviewed An entrepreneurial environment is conformed by factors that play a favourable role in the development of entrepreneurship. Economic literature on innovative milieus identifies those elements that are decisive in improving the competitive performance of companies. We analysed whether Barcelona Activa's specific environment promotes the development of an innovative milieu, which favours entrepreneurial attitudes. The results show how the combination of incubation experience, de...

  1. Empresas familiares de inmigrantes en Barcelona y Montevideo

    Directory of Open Access Journals (Sweden)

    Paola Martínez Pérez

    2009-12-01

    Full Text Available El objetivo de este trabajo es observar las diferentes dimensiones que adquiere la familia en las empresas familiares de inmigrantes. En este caso, la propuesta metodológica es analizar, de forma comparativa, la realidad empresarial consolidada del colectivo gallego en Montevideo con las empresas familiares de inmigrantes de reciente creación en el área metropolitana en Barcelona.

  2. Seismic behaviour of typical masonry buildings from Barcelona's "Eixample"

    OpenAIRE

    Silva Montaño, Javier Fernando

    2011-01-01

    The development of the district of the Eixample started in 1860. During 90 years of construction, the repeatable model that gives the characteristic homogeneity to the district was improved and perfected. As a result of this process, the Eixample district is today, without any doubts, the most representative of the central part of the city of Barcelona. The district of the Eixample has the second highest population density in Spain and nearly 70% of its buildings have a structural syste...

  3. An anthropological approach to voluntarily single motherhood in Barcelona

    Directory of Open Access Journals (Sweden)

    Oscar Jordana-Pröpper

    2013-06-01

    Full Text Available This article is based on the research I did for my doctoral thesis about voluntarily single motherhood in Barcelona (Catalonia, Spain. It is an anthropological approach to the appearance and the development of voluntarily single motherhood, which is when a woman becomes a mother through adoption or conception previously planned without partner. Within a framework of study carried out from October 2001 to October 2007 in the Barcelona Metropolitan Area, my research is based on in-depth interviews with twelve women from April 2002 to April 2006. The aim of the paper is to understand why women in Barcelona choose to be voluntarily single mothers. The purpose is to point out that the voluntarily single motherhood is a new way of understanding between women and men, resulting from the progressive changes in their respective gender roles. This anthropological research is grounded in a full vital process: from the personal decision of the women to become single mothers to the daily interaction with their children.

  4. When a Movement Becomes a Party: The 2015 Barcelona City Council Election

    OpenAIRE

    Aragón, Pablo; Volkovich, Yana; Laniado, David; Kaltenbrunner, Andreas

    2015-01-01

    Barcelona en Com\\'u, an emerging grassroots movement-party, won the 2015 Barcelona City Council election. This candidacy was devised by activists involved in the 15M movement in order to turn citizen outrage into political change. On the one hand, the 15M movement is based on a decentralized structure. On the other hand, political science literature postulates that parties historically develop oligarchical leadership structures. This tension motivates us to examine whether Barcelona en Com\\'u...

  5. The Accounting Mirror of the Banking Business: The Bank of Barcelona (1845-1856)

    OpenAIRE

    Blasco, Y.; Nogues-Marco, Pilar

    2007-01-01

    The Bank of Barcelona was the first regional issuing bank in Spain. Thanks to the recent recovery of the Bank of Barcelona archive, we have analysed accounting ratios of solvency, liquidity and profitability in the 1844-1856 period. The analysis of the accounting ratios shows that the Bank of Barcelona increased its level of financial leverage. Shareholder profitability increased but solvency and liquidity showed a declining trend after the financial crisis of 1847-48. In the beginning of the...

  6. Argonaute-2-null embryonic stem cells are retarded in self-renewal and differentiation

    Indian Academy of Sciences (India)

    P Chandra Shekar; Adnan Naim; D Partha Sarathi; Satish Kumar

    2011-09-01

    RNA interference (RNAi) pathways regulate self-renewal and differentiation of embryonic stem (ES) cells. Argonaute 2 (Ago2) is a vital component of RNA-induced silencing complex (RISC) and the only Ago protein with slicer activity. We generated Ago2-deficient ES cells by conditional gene targeting. Ago2-deficient ES cells are defective in the small-RNA-mediated gene silencing and are significantly compromised in biogenesis of mature microRNA. The self-renewal rate of Ago2-deficient ES cells is affected due to failure of silencing of Cdkn1a by ES-cell-specific microRNAs (miRNA) in the absence of Ago2. Interestingly, unlike Dicer- and Dgcr8-deficient ES cells, they differentiate to all three germ layers both in vivo and in vitro. However, early differentiation of Ago2-deficient ES cells is delayed by 2–4 days as indicated by persistence of higher levels of self-renewal/ pluripotency markers during differentiation. Further, appearance of morphological and differentiation markers is also delayed during the differentiation. In this study we show that Ago2 is essential for normal self-renewal and differentiation. Also, our data suggest that self-renewal and differentiation of ES cells are regulated by both siRNA and miRNA pathways.

  7. Argonaute 2 in dopamine 2 receptor–expressing neurons regulates cocaine addiction

    Science.gov (United States)

    Im, Heh-In; Venø, Morten T.; Fowler, Christie D.; Min, Alice; Intrator, Adam; Kjems, Jørgen; Kenny, Paul J.; O’Carroll, Donal; Greengard, Paul

    2010-01-01

    Cocaine is a highly addictive drug that exerts its effects by increasing the levels of released dopamine in the striatum, followed by stable changes in gene transcription, mRNA translation, and metabolism within medium spiny neurons in the striatum. The multiple changes in gene and protein expression associated with cocaine addiction suggest the existence of a mechanism that facilitates a coordinated cellular response to cocaine. Here, we provide evidence for a key role of miRNAs in cocaine addiction. We show that Argonaute 2 (Ago2), which plays an important role in miRNA generation and execution of miRNA-mediated gene silencing, is involved in regulation of cocaine addiction. Deficiency of Ago2 in dopamine 2 receptor (Drd2)–expressing neurons greatly reduces the motivation to self-administer cocaine in mice. We identified a distinct group of miRNAs that is specifically regulated by Ago2 in the striatum. Comparison of miRNAs affected by Ago2 deficiency with miRNAs that are enriched and/or up-regulated in Drd2-neurons in response to cocaine identified a set of miRNAs that are likely to play a role in cocaine addiction. PMID:20643829

  8. Transcriptional regulation mechanism mediated by miRNA-DNA•DNA triplex structure stabilized by Argonaute.

    Science.gov (United States)

    Toscano-Garibay, Julia D; Aquino-Jarquin, Guillermo

    2014-11-01

    Transcription regulation depends on interactions between repressor or activator proteins with promoter sequences, while post-transcriptional regulation typically relies on microRNA (miRNA) interaction with sequences in 5' and 3'-Untranslated regions (UTRs) of messenger RNA (mRNA). However, several pieces of evidence suggest that miRNA:Argonaute (AGO) complexes may also suppress transcription through RNA interference (RNAi) components and epigenetic mechanisms. However, recent observations suggest that miRNA-induced transcriptional silencing could be exerted by an unknown mechanism independent of chromatin modifiers. The RNA-DNA•DNA triplex structure has emerged as an important RNA tertiary motif in which successive non-canonical base pairs form between a DNA-DNA duplex and a third strand. Frequently, promoters have Purine (PU)-rich tracts, and some Triplex-forming oligonucleotides (TFOs) targeting these regulatory regions have been shown to inhibit transcription selectively. Here, we summarize observations suggesting that miRNAs exert regulation over promoter regions through miRNA-DNA•DNA triplex structure formation stabilized by AGO proteins which represents a plausible model of RNA-mediated Transcriptional gene silencing (TGS). PMID:25086339

  9. Anatomy of RISC: how do small RNAs and chaperones activate Argonaute proteins?

    Science.gov (United States)

    Nakanishi, Kotaro

    2016-09-01

    RNA silencing is a eukaryote-specific phenomenon in which microRNAs and small interfering RNAs degrade messenger RNAs containing a complementary sequence. To this end, these small RNAs need to be loaded onto an Argonaute protein (AGO protein) to form the effector complex referred to as RNA-induced silencing complex (RISC). RISC assembly undergoes multiple and sequential steps with the aid of Hsc70/Hsp90 chaperone machinery. The molecular mechanisms for this assembly process remain unclear, despite their significance for the development of gene silencing techniques and RNA interference-based therapeutics. This review dissects the currently available structures of AGO proteins and proposes models and hypotheses for RISC assembly, covering the conformation of unloaded AGO proteins, the chaperone-assisted duplex loading, and the slicer-dependent and slicer-independent duplex separation. The differences in the properties of RISC between prokaryotes and eukaryotes will also be clarified. WIREs RNA 2016, 7:637-660. doi: 10.1002/wrna.1356 For further resources related to this article, please visit the WIREs website. PMID:27184117

  10. Bacterial Expression of Mouse Argonaute 2 for Functional and Mutational Studies

    Directory of Open Access Journals (Sweden)

    Aniello Russo

    2010-02-01

    Full Text Available RNA interference (RNAi is a post-transcriptional gene-silencing process that occurs in many eukaryotic organisms upon intracellular exposure to double-stranded RNA. Argonaute 2 (Ago2 protein is the catalytic engine of mammalian RNAi. It contains a PIWI domain that is structurally related to RNases H and possibly shares with them a two-metal-ion catalysis mechanism. Here we describe the expression in E. coli of mouse Ago2 and testing of its enzymatic activity in a RISC assay, i.e., for the ability to cleave a target RNA in a single position specified by a complementary small interfering RNA (siRNA. The results show that the enzyme can load the siRNA and cleave the complementary RNA in absence of other cellular factors, as described for human Ago2. It was also found that mutation of Arg669, a residue previously proposed to be involved in substrate and/or B metal ion binding, doesn’t affect the enzymatic activity, suggesting that this residue doesn’t belong to the active site.

  11. Novel Insights into Guide RNA 5′-Nucleoside/Tide Binding by Human Argonaute 2

    Directory of Open Access Journals (Sweden)

    Munishikha Kalia

    2015-12-01

    Full Text Available The human Argonaute 2 (hAgo2 protein is a key player of RNA interference (RNAi. Upon complex formation with small non-coding RNAs, the protein initially interacts with the 5′-end of a given guide RNA through multiple interactions within the MID domain. This interaction has been reported to show a strong bias for U and A over C and G at the 5′-position. Performing molecular dynamics simulations of binary hAgo2/OH–guide–RNA complexes, we show that hAgo2 is a highly flexible protein capable of binding to guide strands with all four possible 5′-bases. Especially, in the case of C and G this is associated with rather large individual conformational rearrangements affecting the MID, PAZ and even the N-terminal domains to different degrees. Moreover, a 5′-G induces domain motions in the protein, which trigger a previously unreported interaction between the 5′-base and the L2 linker domain. Combining our in silico analyses with biochemical studies of recombinant hAgo2, we find that, contrary to previous observations, hAgo2 is capable of functionally accommodating guide strands regardless of the 5′-base.

  12. A novel miRNA processing pathway independent of Dicer requires Argonaute2 catalytic activity.

    Science.gov (United States)

    Cifuentes, Daniel; Xue, Huiling; Taylor, David W; Patnode, Heather; Mishima, Yuichiro; Cheloufi, Sihem; Ma, Enbo; Mane, Shrikant; Hannon, Gregory J; Lawson, Nathan D; Wolfe, Scot A; Giraldez, Antonio J

    2010-06-25

    Dicer is a central enzyme in microRNA (miRNA) processing. We identified a Dicer-independent miRNA biogenesis pathway that uses Argonaute2 (Ago2) slicer catalytic activity. In contrast to other miRNAs, miR-451 levels were refractory to dicer loss of function but were reduced in MZago2 (maternal-zygotic) mutants. We found that pre-miR-451 processing requires Ago2 catalytic activity in vivo. MZago2 mutants showed delayed erythropoiesis that could be rescued by wild-type Ago2 or miR-451-duplex but not by catalytically dead Ago2. Changing the secondary structure of Dicer-dependent miRNAs to mimic that of pre-miR-451 restored miRNA function and rescued developmental defects in MZdicer mutants, indicating that the pre-miRNA secondary structure determines the processing pathway in vivo. We propose that Ago2-mediated cleavage of pre-miRNAs, followed by uridylation and trimming, generates functional miRNAs independently of Dicer. PMID:20448148

  13. Measurement of the epithermal neutron flux of the Argonauta reactor by the Sandwich method

    International Nuclear Information System (INIS)

    A common method of obtaining information about the neutron spectrum in the energy range of 1 eV to a few keV is by using resonance sandwich detectors. A sandwich detector is usually made up of three foils placed one on top of the other, each having the same thickness and being made of the same material which has a pronounced absorption resonance. To make an adequate evaluation, the sandwich method was compared with one using an isolated detector. The results obtained from approximate theoretical calculations were checked experimentally, using In, Au and Mn foils, in an isotropic 1/E flux in the Argonaut Reactor at I.E.N. As practical application of this method, the deviation from a 1/E spectrum of the epithermal neutron flux in the core and external graphite reflector of the Argonaut Reactor has been measured with the sandwich foils previously calibrated in a 1/E spectrum. (author)

  14. ARGONAUTE 1 homeostasis invokes the coordinate action of the microRNA and siRNA pathways

    OpenAIRE

    Mallory, Allison C; Vaucheret, Hervé

    2009-01-01

    ARGONAUTE 1 (AGO1) slices endogenous messenger RNAs (mRNAs) during both microRNA (miRNA)- and short interfering RNA (siRNA)-guided post-transcriptional silencing. We have previously reported that AGO1 homeostasis is maintained through the repressive action of miR168 on AGO1 mRNA and the stabilizing effect of AGO1 protein on miR168, but siRNA-mediated AGO1 regulation has not been reported. Here, we show that AGO1-derived siRNAs trigger RNA DEPENDENT RNA POLYMERASE 6 (RDR6)-, SUPPRESSOR OF GENE...

  15. HIV-1 RNAs are Not Part of the Argonaute 2 Associated RNA Interference Pathway in Macrophages.

    Directory of Open Access Journals (Sweden)

    Valentina Vongrad

    Full Text Available MiRNAs and other small noncoding RNAs (sncRNAs are key players in post-transcriptional gene regulation. HIV-1 derived small noncoding RNAs (sncRNAs have been described in HIV-1 infected cells, but their biological functions still remain to be elucidated. Here, we approached the question whether viral sncRNAs may play a role in the RNA interference (RNAi pathway or whether viral mRNAs are targeted by cellular miRNAs in human monocyte derived macrophages (MDM.The incorporation of viral sncRNAs and/or their target RNAs into RNA-induced silencing complex was investigated using photoactivatable ribonucleoside-induced cross-linking and immunoprecipitation (PAR-CLIP as well as high-throughput sequencing of RNA isolated by cross-linking immunoprecipitation (HITS-CLIP, which capture Argonaute2-bound miRNAs and their target RNAs. HIV-1 infected monocyte-derived macrophages (MDM were chosen as target cells, as they have previously been shown to express HIV-1 sncRNAs. In addition, we applied small RNA deep sequencing to study differential cellular miRNA expression in HIV-1 infected versus non-infected MDMs.PAR-CLIP and HITS-CLIP data demonstrated the absence of HIV-1 RNAs in Ago2-RISC, although the presence of a multitude of HIV-1 sncRNAs in HIV-1 infected MDMs was confirmed by small RNA sequencing. Small RNA sequencing revealed that 1.4% of all sncRNAs were of HIV-1 origin. However, neither HIV-1 derived sncRNAs nor putative HIV-1 target sequences incorporated into Ago2-RISC were identified suggesting that HIV-1 sncRNAs are not involved in the canonical RNAi pathway nor is HIV-1 targeted by this pathway in HIV-1 infected macrophages.

  16. Argonaute 2 complexes selectively protect the circulating microRNAs in cell-secreted microvesicles.

    Directory of Open Access Journals (Sweden)

    Limin Li

    Full Text Available Cell-secreted miRNAs are highly stable and can serve as biomarkers for various diseases and signaling molecules in intercellular communication. The mechanism underlying the stability of circulating miRNAs, however, remains incompletely understood. Here we show that Argonaute 2 (Ago2 complexes and microvesicles (MVs provide specific and non-specific protection for miRNA in cell-secreted MVs, respectively. First, the resistance of MV-encapsulated miRNAs to RNaseA was both depended on intact vesicular structure of MVs and protease-sensitive. Second, an immunoprecipitation assay using a probe complementary to human miR-16, a miRNA primarily located in the MVs and showed a strong, protease-sensitive resistance to RNaseA, identified Ago2 as a major miR-16-associated protein. Compared with protein-free miR-16, Ago2-associated miR-16 was resistant to RNaseA in a dose- and time-dependent fashion. Third, when the miR-16/Ago2 complex was disrupted by trypaflavine, the resistance of miR-16 to RNaseA was decreased. In contrast, when the association of miR-16 with the Ago2 complexes was increased during cell apoptosis, although the total amount of miR-16 and Ago2 remained unchanged, the resistance of miR-16 to RNaseA in the MVs was enhanced. A similar correlation between the increase of miR-223/Ago2 association and the resistance of miR-223 against RNaseA was observed during all trans retinoic acid (ATRA-induced cell differentiation of promyelocytic HL60 cells. In conclusion, the association of miRNAs with Ago2 complexes, an event that is linked to cell functional status, plays a critical role in stabilizing the circulating miRNAs in cell-secreted MVs.

  17. The political transnationalism of immigrant associations in Barcelona

    OpenAIRE

    Vancea, Mihaela

    2009-01-01

    Aquesta tesi vol respondre a dos preguntes fonamentals en l'??rea de recerca de la migraci?? transnacional: s'impliquen els immigrants en el transnacionalisme pol??tic? I, quins s??n els factors determinants del seu activisme pol??tic transnacional ? Per respondre a la primera q??esti??, comparo el nivell d'activisme pol??tic transnacional d'una mostra d'associacions de diferents or??gens immigrants a Barcelona. Per contestar a la segona, centro l'atenci?? en possibles factors determinants a ...

  18. Barcelona contemporánea: el ocaso de un modelo

    Directory of Open Access Journals (Sweden)

    Antonio Pizza

    2012-12-01

    Full Text Available Barcelona is a city, which through the democratization of public space in the second half of the seventies, developed with a noticeable intention of balancing the public and private. The municipalities’ efforts were focused towards the planification and regeneration of dilapidated spaces and the construction of new structures for public benefit. However, since 2007 new phenomena have come to light that emphasise urban problems in which public interests become less important than private investment initiatives. New market priorities, together with tourism and myriad immigration have caused an “expropriation” of the city from its inhabitants.

  19. Comunidades imaginadas: nacionalismo banal en los locutorios de Barcelona

    OpenAIRE

    Joel Feliu; Mª Carmen Peñaranda-Cólera; Adriana Gil-Juárez

    2012-01-01

    A pesar de la competencia que sufren, al multiplicarse las posibilidades de conexión a las redes telefónicas e informáticas, los locutorios de la ciudad de Barcelona y alrededores, no dejan de ser negocios con un relativo éxito. Partiendo de un trabajo de campo colectivo en este artículo articulamos los conceptos de Nacionalismo Banal de Michael Billig y de Comunidad Imaginada de Benedict Anderson, para mostrar que en estos espacios de conexión pueden encontrarse comunidades nacionales imagin...

  20. De bandas latinas a asociaciones juveniles: La experiencia de Barcelona

    OpenAIRE

    Feixa , Carles; Canelles, Noemí

    2006-01-01

    La construcción de la imagen de los jóvenes de origen latinoamericano en Barcelona ha estado estrechamente relacionada con las llamadas “bandas latinas”, caracterizadas desde los medios de comunicación como criminales y sectarias. A pesar de que los criterios que han regido las primeras estrategias de intervención se corresponden con esta caracterización, existen diversos factores que permiten una conceptualización diferente y unas políticas más cercanas a las que se realizan c...

  1. Arte emergente: creación en Barcelona

    OpenAIRE

    Gasol Señorón, Daniel

    2014-01-01

    [spa] La presente tesis busca indagar acerca de las dinámicas de visibilidad y legitimación del Arte emergente poniendo desde el contexto Barcelona, las maneras de intervenir sobre las formas de subjetividad de los creadores. Se lleva a cabo una reflexión que, a nivel teórico, se mueve entre la “crítica Institucional” y el planteamiento generacional de los jóvenes creadores acerca de la Institucionalización que legitima su trabajo, concediendo a la obra una aprobación personal sobre su produc...

  2. Felipe V en Barcelona: un futuro sin futuro

    Directory of Open Access Journals (Sweden)

    María de los Ángeles PÉREZ SAMPER

    2009-11-01

    Full Text Available RESUMEN: La visita de Felipe V a Cataluña desde el 24 de septiembre de 1701 al 8 de abril de 1702 y la expectativa levantada constituye el asunto del presente trabajo. A través de testimonios de la época, se repasa pormenorizadamente la decisión del monarca de viajar al principado de Cataluña, las incidencias de dicho desplazamiento, el recibimiento de que fue objeto en Barcelona, la entrada real y la fiesta, el juramento de las Constitutions de Cataluña realizado por el rey y el juramento del rey por los representantes del Principado, la inauguración de las Cortes catalanas, las discrepancias suscitadas, la boda y otras fiestas y diversiones celebradas durante aquel breve período.ABSTRACT: Philip V’s visit to Catalonia from 24 September 1701 to 8 April 1702 and the expectations aroused are the subject of this study. Through testimonies of the age, a detailed study is made of the monarch’s decision to travel to the Principality of Catalonia, the events of this journey, his reception in Barcelona, the royal entry and celebration, the swearing of the Constitutions of Catalonia by the king and the swearing of the king by the representatives of the Principality, the inauguration of the Catalonian Assembly, the discrepancies that arose, the wedding and other celebrations and entertainments held during that brief period.

  3. Edificio en La Plaza Lesseps de Fernando Lesseps – Barcelona

    Directory of Open Access Journals (Sweden)

    Danés, Albert

    1975-02-01

    Full Text Available This interesting example of urban architecture is situated in Barcelona, facing two streets of different widths, for which reasons the number of floors on the two sides is also different. The basements are reserved for parking space. Further the building comprises commercial ground floors with very attractive shopping arcades; a mezzanine commercial floor as well and the top floors, that are intended for housings. Pleasant exterior with solid colours. The work has been achieved thanks to the valuable contribution of Lluciá Navarro i Rodón.Esta interesante muestra de la arquitectura urbana está emplazada en Barcelona, con fachadas a dos calles de anchura diferente, por lo que el número de plantas es también distinto. Sótanos destinados a estacionamiento de vehículos. Plantas bajas comerciales, con galerías de paso muy atractivas. Entresuelo, también comercial, y plantas altas de viviendas variadas. Tratamiento exterior atrayente, a base de colores sólidos y sistema esgrafiado, contando con la valiosa colaboración de Lluciá Navarro i Rodón.

  4. Differential effects of viral silencing suppressors on siRNA and miRNA loading support the existence of two distinct cellular pools of ARGONAUTE1

    OpenAIRE

    Schott, Gregory; Mari-Ordonez, Arturo; Himber, Christophe; Alioua, Abdelmalek; Voinnet, Olivier; Dunoyer, Patrice

    2012-01-01

    Plant viruses encode suppressors (VSRs) that target the host antiviral RNA silencing pathway. Here, VSRs are shown to differentially impair siRNA and miRNA binding to Argonaute1, AGO1, revealing distinct AGO1 pools that are preferentially loaded with either siRNAs or miRNAs.

  5. Especificació i disseny d'una aplicació pel ZOO de Barcelona

    OpenAIRE

    Àngel Torras, Marta

    2016-01-01

    Aquest TFG es basa en el disseny i l'especificació d'una aplicació pel Zoo de Barcelona. Es tracta d'una app enfocada a millorar la visita al parc, oferint funcionalitats i informació que permetin a l'usuari gaudir més de la visita al Zoo de Barcelona. This TFG is based on design and especification of an app for Barcelona Zoo. It aims to enhance the visitor's experience, by offering functionality and wider information so that the visit to the Zoo may be better appreciated by anyone using t...

  6. Asociacionismo y sociabilidad fascista en la colonia italiana de Barcelona

    Directory of Open Access Journals (Sweden)

    Rubén Domínguez Méndez

    2013-06-01

    Full Text Available El presente artículo pretende profundizar en la traslación realizada por el fascismo de sus estructuras de sociabilidad entre la población emigrada. Para ello, se analiza el caso concreto de la colonia italiana en Barcelona aprovechando la reciente aparición de varias publicaciones que han ofrecido nueva perspectivas sobre un grupo pequeño, en comparación con otras comunidades italianas en el extranjero, pero especialmente dinámico. Utilizando documentación anteriormente no consultada, se muestra el proceso de conquista de las antiguas asociaciones liberales y la pugna por controlar la nueva organización creada para reconducir las fórmulas de sociabilidad de la colonia. A modo de conclusión final se puede señalar que el programa fascista, con sus actividades doctrinarias y lúdicas, pudo desarrollarse en la medida que los acontecimientos políticos en España le proporcionaron la coyuntura adecuada; es decir, durante los periodos dictatoriales.PALABRAS CLAVES: Asociacionismo. Sociabilidad. Fascismo. Emigración. Barcelona. España. Italia.ASSOCIATIONISM AND FASCIST SOCIABILITY IN THE ITALIAN COLONY OF BARCELONAABSTRACT: This article examines the transfer done by the fascism of their structures of sociability among the emigrant population. To this end, he examines the specific case of the Italian colony in Barcelona, taking advantage of the recent appearance of several publications that provide new perspectives on a small group, compared with other Italian communities abroad, but specially dynamic. Through a careful study of inedited documents from several archives, shows the process of conquest of the liberal associations and the struggle to control the new organization created to redirect the formulas of sociability of the colony. In a final conclusion can be noted that the fascist agenda, with its doctrine and leisure activities, was developed according to Spanish political events; having more success during the stages dictatorial

  7. La casa del Palau del Temple, de Barcelona

    OpenAIRE

    Fuguet Sans, Joan

    2004-01-01

    En aquest treball, es revisa i es posa al dia l'opinió expressada, l'any 1989, a L'arquitectura dels templers a Catalunya, sobre la seu de la comanda del Temple a Barcelona. A partir de noves aportacions documentals i bibliogràfiques, no només s'hi subratlla la importància del conjunt, sinó que s'hi constata (després d'analitzar-ne detingudament els pros i els contres) la paternitat templera de la famosa «sala dels cavalls», atribuïda tradicionalment a Pere III. L'estudi es fa extensiu a les ...

  8. Research reactor decommissioning experience - concrete removal and disposal -

    International Nuclear Information System (INIS)

    Removal and disposal of neutron activated concrete from biological shields is the most significant operational task associated with research reactor decommissioning. During the period of 1985 thru 1989 Chem-Nuclear Systems, Inc. was the prime contractor for complete dismantlement and decommissioning of the Northrop TRIGA Mark F, the Virginia Tech Argonaut, and the Michigan State University TRIGA Mark I Reactor Facilities. This paper discusses operational requirements, methods employed, and results of the concrete removal, packaging, transport and disposal operations for these (3) research reactor decommissioning projects. Methods employed for each are compared. Disposal of concrete above and below regulatory release limits for unrestricted use are discussed. This study concludes that activated reactor biological shield concrete can be safely removed and buried under current regulations

  9. Sprawl in Barcelona Region and the PTMB 2010

    Directory of Open Access Journals (Sweden)

    Antonio Acierno

    2012-04-01

    Full Text Available The Barcelona metropolitan region is composed of 164 municipalities distributed over an area of ​​about 3234 sq km with a population of 5 million inhabitants. In the last decades, the growth of metropolitan region has been characterized by some critical problems: high land occupation, dispersed occupation of the territory, low building density, considerable fragmentation and high specialization (residential developments, commercial centers, industrial areas, etc, growing social segregation. The sprawl, together with changes in economic and social structure, caused a loss of landscape and environment values in the territory, a reduction of natural areas, involving an increase in consumption of resources. The sprawling development was already evident in the early 1970s, and a study of dynamic of the sprawl was conducted to show the main features of this process. The morphology of discontinuity, fragmentation and heterogeneity are common features of the metropolitan regions in Southern Europe. The changes from the traditional compact city to a dispersed one caused important effects in the functioning of the territories and in the lifestyles of their users. The main problems addressed by the plan have been identified in the sprawl, the territorial fragmentation and the growing social segregation. The adoption of the Barcelona Metropolitan Plan is a notable innovation in the scenario of spatial planning and urban policies in Catalonia. In fact, the PTMB, that comes to close more than 40 years of controversy and failed attempts, presents some aspects of particular interest and represents a planning tool providing a methodology for administrative and political management for the future. The plan has been proposed by regional government in concert with municipalities through an interesting participatory process that has secured a broad consensus. The plan structure founded on three main systems: Open Spaces, Settlements and Infrastructures; all of

  10. Rationalisation of NDT, remote visual inspection and metallurgical services for ageing-related degradation in low power (<100 kW) research reactors

    International Nuclear Information System (INIS)

    Full text: The objectives of the proposed research project are: a) formulate a database of ad hoc and generic ageing related degradation problems to low power (<100 kW) research reactors, and b) explore and investigate the application of selected NDT methods identified in a) (and rationalised within the IAEA Working Group) to examination of the JASON Argonaut reactor (33 year old). Dr. Beeley reported on the recent shutdown and decommissioning of the JASON reactor. His presentation then focused on ISI and routine maintenance programmes for four UK and two Canadian low power research reactors. (author)

  11. The JASON reactor: from core removal to fuel reprocessing

    Energy Technology Data Exchange (ETDEWEB)

    Beeley, P.; Williams, A.; Lockwood, R. [Defence College of Electromechanical Engineering, Nuclear Dept., HMS SULTAN (United Kingdom); Raymond, B.; Spyrou, N. [Surrey Univ., Dept. of Physical and Electronic Sciences (United Kingdom); Auziere, P. [AREVA NC, Treatment Business Unit, 78 - Velizy (France)

    2007-07-01

    The 10 kW JASON Argonaut reactor was operated at the Royal Naval College, Greenwich, London, between 1962 and 1996. After initial cooling in the core, the MTR type fuel (80% enriched U{sup 235}) was dry stored on site before transport in 1998 to BNFL, Sellafield for interim wet storage. Arrangements for reprocessing of the fuel at AREVA NC, La Hague are now in progress and this paper will describe various aspects of the storage, transfer, monitoring, and the treatment at La Hague plant. The radioactive waste resulting from the processing of these used fuels will be conditioned into a suitable package for return to UK.

  12. Plan for Moata reactor decommissioning, ANSTO

    International Nuclear Information System (INIS)

    'Moata' is an Argonaut type 100 kW reactor that was operated by Australian Nuclear Science and Technology Organisation for 34 years from 1961 to 1995. It was initially used as a reactor-physics research tool and a training reactor but the scope of operations was extended to include activation analysis and neutron radiography from the mid 1970s. In 1995, the Moata reactor was shutdown on the grounds that its continued operation could no longer be economically justified. All the fuel (HEU) was unloaded to temporary storage and secured in 1995, followed by drainage of the demineralised water (primary coolant) from the reactor in 1996 and complete removal of electrical cables in 1998. The Reactor Control Room has been renovated into a modern laboratory. The reactor structure is still intact and kept under safe storage. Various options for decommissioning strategies have been considered and evaluated. So far, 'Immediate Dismantling' is considered to be the most desirable option, however, the timescale for actual dismantling needs to take account of the establishment of the national radioactive repository. This paper describes the dismantling options and techniques considered along with examples of other dismantling projects overseas. (author)

  13. Uudised : NYYD Ensemble "Varssavi sügisel". Hortus Baltimaade kultuurifestivalil. Esikoht Barcelonas

    Index Scriptorium Estoniae

    2001-01-01

    NYYD Ensemble esines 26. sept. Poola festivalil "Varssavi sügisel" Eesti heliloojate teostega. Ans. Hortus Musicus esines Helsingis Baltimaade kultuurifestivali raames. Estonia Seltsi SK võitis Barcelonas toimunud koorifestivalil "Euroopa... ja tema laulud" kuldmedali

  14. Feasibility of a Vietnamese café in Spain : Case: Café Hanoi, Barcelona, Spain

    OpenAIRE

    Nguyen, Tra My

    2016-01-01

    This study covers the feasibility of a business idea – a Vietnamese café in the city of Barcelona, Spain. The study is the preliminary of a business plan. Therefore, it aims to discover the environment surrounding the café in Barcelona, Spain. The study employs descriptive approach, using both quantitative and qualitative methods. The data collection includes both primary and secondary data. The primary data is collected through focus group, interviews and questionnaire. The secondary dat...

  15. Service-Learning in Physical Education Teacher Training. Physical Education in the Modelo Prison, Barcelona

    OpenAIRE

    Teresa Lleixà; Merche Ríos

    2015-01-01

    In the Psychiatric Unit of the Modelo Prison, Barcelona, a physical education programme is carried out annually with the participation of University of Barcelona (UB) students. In this context, we carried out a study based on service-learning parameters. The aim of the study was twofold: to determine the impact on inmates of the physical education programme that was undertaken with university students; and to assess what university students’ learnt in the prison-based socio-educational interv...

  16. Un nuevo centro: el Institut Botànic de Barcelona

    OpenAIRE

    Valentin, Sandra; Manso Calzada, Isidora

    2000-01-01

    El Institut Botànic de Barcelona es un centro mixto (CSIC - Ayuntamiento de Barcelona) y su biblioteca está especializada en botánica. Entre sus fondos incluye revistas especializadas, floras regionales y generales de todo el mundo, libros de horticultura, jardinería, botánica sistemática, ecología, nomenclatura botánica, etc

  17. First epidemiological report of feline heartworm infection in the Barcelona metropolitan area (Spain)

    OpenAIRE

    Montoya-Alonso, José Alberto; CARRETÓN, Elena; García-Guasch, Laín; Expósito, Jordi; Armario, Belén; Morchón, Rodrigo; Simón, Fernando

    2014-01-01

    Background The metropolitan area of Barcelona is the most densely populated metropolitan area on the Mediterranean coast. Several studies have reported the presence of canine heartworm disease in this region; however, there are no published epidemiological data regarding feline heartworm in this region and the prevalence in this species remains unknown. Methods Serum samples from 758 cats living in the metropolitan area of Barcelona (Spain) were collected between 2012 and 2013. To establish t...

  18. CITIES COMPETITION, PLACE MARKETING AND ECONOMIC DEVELOPMENT IN SOUTH EUROPE: THE BARCELONA CASE AS FDI DESTINATION

    OpenAIRE

    Metaxas, Theodore

    2010-01-01

    The aim of the article is to focus on the especially interesting area of South Europe and to present and points out the strategic development process, in one of the most representative examples of its successful implementation, which is the city of Barcelona. Barcelona, which in the last 20 years, managed to increase its competitiveness becoming one of the most attractive investment destinations on international level. The city?s economic dynamism, its strategic position in the South of Europ...

  19. Barcelona, caminando hacia la resiliencia urbana en el barrio de Vallcarca

    OpenAIRE

    Balanzo Joue, Rafael de

    2015-01-01

    Many neighbourhoods and cities are succumbing to multiple and successive changes caused by internal collapse and external systemic crises. The neighbourhood of Vallcarca in the Gràcia district has become an urban landmark of the city of Barcelona. It is characterized equally by belonging to one of the first districts of Barcelona to implement policies of urban sustainability, and by succumbing for more than a decade to a process of crisis, devastation and conflict induced by a development pla...

  20. Trabajo sexual en Barcelona. Sobre la gestión municipal del espacio público

    Directory of Open Access Journals (Sweden)

    Julieta Vartabedian

    2011-02-01

    Full Text Available In this paper, the author will reflect on the management of public spaces in Barcelona through the case of sex work. The different ways that the Barcelona City Council has promoted the control and restriction of the free exercise of street sex work will be discussed. Recognising that the spaces are not fully accessible to everyone, the model of "civility" that Barcelona plans to implement will be explained. As a result of former zoning practices, there is a political will to make this activity "invisible", which perpetuates the vulnerability of sex workers themselves. En este artículo la autora reflexionará sobre la gestión del espacio público en Barcelona a través del caso del trabajo sexual. Se analizarán las distintas modalidades que el Ayuntamiento de Barcelona ha promovido para, en definitiva, controlar y restringir el libre ejercicio del trabajo sexual callejero. Partiendo del reconocimiento que los espacios no son plenamente accesibles para todas y todos, se explicará el modelo de “civismo” que Barcelona pretende implementar. Mediante antiguas prácticas de zonificación, se observa una voluntad política de invisibilizar esta actividad al mismo tiempo que se perpetúa la vulnerabilidad de las propias trabajadoras.Download this paper from SSRN: http://ssrn.com/abstract=1953623

  1. The Bernades herbarium in the Botanic Institute of Barcelona (BC

    Directory of Open Access Journals (Sweden)

    Ibáñez, N.

    2009-12-01

    Full Text Available The BC-Bernades herbarium is one of the oldest collections conserved in the Botanical Institute of Barcelona. It contains part of the field collections of Miquel Bernades i Mainader and Miquel Bernades i Clarís, doctors of medicine and botanists of Catalonian origin living in Madrid in the 18th century. The collection consists of 817 sheets, the complete list provided in the annexe. We also present information concerning the localities of certain specific recollections, the taxonomic groups and families, as well as a list of sheets of special interest. This list contains witness of cornfield weed now very rare or extinct in Iberian lands, such as Hymenocarpos circinatus (L. Savi or Securigera securidaca (L. Degen & Dörfl , and also some of the first witness known from Spain of introduced plants, such as Aster cordifolius L. or Bidens bipinnata L.

    [es] El herbario BC-Bernades es una de las colecciones más antiguas conservadas en el Instituto Botánico de Barcelona. Contiene parte de las recolecciones de Miquel Bernades y Mainader y Miquel Bernades y Clarís, médicos y botánicos catalanes del siglo XVIII establecidos en Madrid. Consta de 817 pliegos, la relación de los cuales presentamos en un anexo. También mostramos datos sobre las localidades de recolección, grupos taxonómicos y familias presentes, y una relación de pliegos de interés. Entre estos aparecen testimonios de plantas arvenses extinguidas o muy raras en tierras ibéricas como Hymenocarpos circinatus (L. Savi o Securigera securidaca (L. Degen & Dörfl , y también algunos de los primeros testimonios conocidos en España de plantas introducidas como Aster cordifolius L. o Bidens bipinnata L. [ct] L’herbari BC-Bernades és una de les col·leccions més antigues de les conservades a l’Institut Botànic de Barcelona. Conté part de les recol·leccions de Miquel Bernades i Mainader i Miquel Bernades

  2. L 'abastament de blat a la ciutat de Barcelona en temps d'Alfons el Benigne (1327-1336)

    OpenAIRE

    Mutgé Vives, Josefina

    2001-01-01

    The aim of this article is to study the question of wheat scarcity in Barcelona during the reign of Alphonse the Benign. Different aspects are boarded, such as: reasons of the endemic wheat shortage in Barcelona, the cerealistic policy established by the Crown and by the city Council, the routes of wheat arrival, different means that the Barcelona Council used so that merchants were interested in introducing cereal into the city, prices of cereals, kinds and qualities of cereals, weights and ...

  3. Ciudadanos del este de Europa consumidores de drogas en Barcelona

    Directory of Open Access Journals (Sweden)

    González M.

    2003-01-01

    Full Text Available Desde mayo de 1999 hasta mayo de 2001, hemos contactado en el SAPS (Servicio de Atención Social y Sanitaria de Barcelona con usuarios de drogas de países del este de Europa. Acuden a centros terapéuticos gratuitos, aunque pagan por la organización del viaje unos 500 euros. Son jóvenes entre 18 y 30 años y mantienen el contacto con sus familiares. Conocen los riesgos de transmisión de enfermedades, pero suelen reutilizar las jeringas. Es alta la prevalencia de hepatitis C (92% y B (62% y menor la de infección por el VIH (19%. Si no abandonan las drogas, el retorno es un fracaso y tienen dificultades para proseguir los tratamientos con metadona o antirretrovirales. La respuesta asistencial ha de adecuarse a sus necesidades. Se debe procurar la mediación cultural y la información en los lugares de origen, supervisar los centros terapéuticos y diseñar alternativas a los abandonos. Hay que desarrollar la colaboración internacional, estimular programas de disminución de riesgos derivados del consumo y evitar que del tratamiento se haga un comercio.

  4. Chlorinated organic pesticides in marketed food: Barcelona, 2001-06

    Energy Technology Data Exchange (ETDEWEB)

    Fontcuberta, M. [Agencia de Salut Publica de Barcelona, ASPB, Public Health Agency of Barcelona, Av Drassanes 13, 08001 Barcelona (Spain)], E-mail: mfontcub@aspb.es; Arques, J.F.; Villalbi, J.R.; Martinez, M.; Centrich, F.; Serrahima, E.; Pineda, L.; Duran, J.; Casas, C. [Agencia de Salut Publica de Barcelona, ASPB, Public Health Agency of Barcelona, Av Drassanes 13, 08001 Barcelona (Spain)

    2008-01-15

    This paper reports concentration levels of 22 chlorinated organic compounds (both primary compounds and metabolites) in food marketed in the city of Barcelona (Catalonia, Spain) in 2001-06. Samples included meat products, fish and seafood, eggs, milk and dairy, vegetal oils, cereal products and derivates, vegetables, fresh fruits, dry fruits, spices, formula and baby food, tea and wine. Levels of chlorinated organic compounds were determined by gas chromatography with selective detectors: electron capture (ECD), flame photometric (FPD) and confirmation with mass-spectrometry. Chlorinated organic pesticides were detected in 7 of the 1,484 samples analyzed in the 2001-06 period (0.5%): 1 dairy product, 1 fruit, 1 olive oil and 4 vegetables. Specific pesticides detected are lindane and endosulfan {alpha}, {beta} or sulphate. A decrease in both the proportion of samples with detectable residues and in the variety of chlorinated pesticides found is visible when comparing these results with those of the previous 1989-2000 period. These results suggest the gradual disappearance of regulated chlorinated organic pesticides as a consequence of the growing worldwide implementation of current regulatory agreements.

  5. Chlorinated organic pesticides in marketed food: Barcelona, 2001-06

    International Nuclear Information System (INIS)

    This paper reports concentration levels of 22 chlorinated organic compounds (both primary compounds and metabolites) in food marketed in the city of Barcelona (Catalonia, Spain) in 2001-06. Samples included meat products, fish and seafood, eggs, milk and dairy, vegetal oils, cereal products and derivates, vegetables, fresh fruits, dry fruits, spices, formula and baby food, tea and wine. Levels of chlorinated organic compounds were determined by gas chromatography with selective detectors: electron capture (ECD), flame photometric (FPD) and confirmation with mass-spectrometry. Chlorinated organic pesticides were detected in 7 of the 1,484 samples analyzed in the 2001-06 period (0.5%): 1 dairy product, 1 fruit, 1 olive oil and 4 vegetables. Specific pesticides detected are lindane and endosulfan α, β or sulphate. A decrease in both the proportion of samples with detectable residues and in the variety of chlorinated pesticides found is visible when comparing these results with those of the previous 1989-2000 period. These results suggest the gradual disappearance of regulated chlorinated organic pesticides as a consequence of the growing worldwide implementation of current regulatory agreements

  6. Crystal Structure of A. aeolicus Argonaute, a Site-Specific DNA-Guided Endoribonuclease, Provides Insights into RISC-Mediated mRNA Cleavage

    OpenAIRE

    Yuan, Yu-Ren; Pei, Yi; Ma, Jin-Biao; Kuryavyi, Vitaly; Zhadina, Maria; Meister, Gunter; Chen, Hong-Ying; Dauter, Zbigniew; Tuschl, Thomas; Patel, Dinshaw J.

    2005-01-01

    Argonaute (Ago) proteins constitute a key component of the RNA-induced silencing complex (RISC). We report the crystal structure of Aquifex aeolicus Ago (Aa-Ago) together with binding and cleavage studies, which establish this eubacterial Ago as a bona fide guide DNA strand-mediated site-specific RNA endonuclease. We have generated a stereochemically robust model of the complex, where the guide DNA-mRNA duplex is positioned within a basic channel spanning the bilobal interface, such that the ...

  7. The Argonaute CSR-1 and its 22G-RNA co-factors target germline genes and are required for holocentric chromosome segregation

    OpenAIRE

    Claycomb, Julie M.; Batista, Pedro J; Pang, Ka Ming; Gu, Weifeng; Vasale, Jessica J.; van Wolfswinkel, Josien C.; Chaves, Daniel A.; Shirayama, Masaki; Mitani, Shohei; Ketting, René F.; Conte, Darryl; Mello, Craig C

    2009-01-01

    RNAi-related pathways regulate diverse processes, from developmental timing to transposon silencing. Here, we show that in C. elegans the Argonaute CSR-1, the RNA-dependent RNA polymerase EGO-1, the Dicer-related helicase DRH-3, and the Tudor-domain protein EKL-1 localize to chromosomes and are required for proper chromosome segregation. In the absence of these factors chromosomes fail to align at the metaphase plate and kinetochores do not orient to opposing spindle poles. Surprisingly, the ...

  8. Safety evaluation report related to the renewal of the operating license for the research reactor at the University of Florida. Docket No. 50-83

    International Nuclear Information System (INIS)

    This Safety Evaluation Report for the application filed by the University of Florida (UF) for a renewal of Operating License R-56 to continue to operate its Argonaut-type research reactor has been prepared by the Office of Nuclear Reactor Regulation of the US Nuclear Regulatory Commission. The facility is owned and operated by the University of Florida and is located on the UF campus in Gainesville, Alachua County, Florida. The staff concludes that the reactor facility can continue to be operated by UF without endangering the health and safety of the public

  9. French validation of the Barcelona Music Reward Questionnaire.

    Science.gov (United States)

    Saliba, Joe; Lorenzo-Seva, Urbano; Marco-Pallares, Josep; Tillmann, Barbara; Zeitouni, Anthony; Lehmann, Alexandre

    2016-01-01

    Background. The Barcelona Music Reward Questionnaire (BMRQ) questionnaire investigates the main facets of music experience that could explain the variance observed in how people experience reward associated with music. Currently, only English and Spanish versions of this questionnaire are available. The objective of this study is to validate a French version of the BMRQ. Methods. The original BMRQ was translated and adapted into an international French version. The questionnaire was then administered through an online survey aimed at adults aged over 18 years who were fluent in French. Statistical analyses were performed and compared to the original English and Spanish version for validation purposes. Results. A total of 1,027 participants completed the questionnaire. Most responses were obtained from France (89.4%). Analyses revealed that congruence values between the rotated loading matrix and the ideal loading matrix ranged between 0.88 and 0.96. Factor reliabilities of subscales (i.e., Musical Seeking, Emotion Evocation, Mood Regulation, Social Reward and Sensory-Motor) also ranged between 0.88 and 0.96. In addition, reliability of the overall factor score (i.e., Music reward) was 0.91. Finally, the internal consistency of the overall scale was 0.85. The factorial structure obtained in the French translation was similar to that of the original Spanish and English samples. Conclusion. The French version of the BMRQ appears valid and reliable. Potential applications of the BMRQ include its use as a valuable tool in music reward and emotion research, whether in healthy individuals or in patients suffering from a wide variety of cognitive, neurologic and auditory disorders. PMID:27019776

  10. French validation of the Barcelona Music Reward Questionnaire

    Science.gov (United States)

    Lorenzo-Seva, Urbano; Marco-Pallares, Josep; Tillmann, Barbara; Zeitouni, Anthony; Lehmann, Alexandre

    2016-01-01

    Background. The Barcelona Music Reward Questionnaire (BMRQ) questionnaire investigates the main facets of music experience that could explain the variance observed in how people experience reward associated with music. Currently, only English and Spanish versions of this questionnaire are available. The objective of this study is to validate a French version of the BMRQ. Methods. The original BMRQ was translated and adapted into an international French version. The questionnaire was then administered through an online survey aimed at adults aged over 18 years who were fluent in French. Statistical analyses were performed and compared to the original English and Spanish version for validation purposes. Results. A total of 1,027 participants completed the questionnaire. Most responses were obtained from France (89.4%). Analyses revealed that congruence values between the rotated loading matrix and the ideal loading matrix ranged between 0.88 and 0.96. Factor reliabilities of subscales (i.e., Musical Seeking, Emotion Evocation, Mood Regulation, Social Reward and Sensory-Motor) also ranged between 0.88 and 0.96. In addition, reliability of the overall factor score (i.e., Music reward) was 0.91. Finally, the internal consistency of the overall scale was 0.85. The factorial structure obtained in the French translation was similar to that of the original Spanish and English samples. Conclusion. The French version of the BMRQ appears valid and reliable. Potential applications of the BMRQ include its use as a valuable tool in music reward and emotion research, whether in healthy individuals or in patients suffering from a wide variety of cognitive, neurologic and auditory disorders. PMID:27019776

  11. PROCESSES OF SOCIAL EXCLUSION OF HOMELESSNESS IN THE CITY OF BARCELONA

    Directory of Open Access Journals (Sweden)

    María Virginia Matulic Domandzic

    2013-12-01

    Full Text Available Processes of social exclusion of the homeless people in the city of Barcelona are addressed in thisarticle through three sections. First, an approximation to the processes of social exclusion present inEuropean societies is done, then look focuses on the conceptual dimension of homeless people andits root causes, to end with some conclusions on where the issues raised are synthesized as well asthe future challenges that are presented in this phenomenon. This article is part of the research workbeing done on the processes of social inclusion of homeless people in Barcelona. This research islinked to the Doctorate "Education and Society" at the University of Barcelona through the Departmentof Social Work and Social Services. The growing phenomenon of homelessness responds to macroprocessesthat have characterized the post-Fordist societies in recent decades where the fragility ofsupport networks and systems of social protection are crucial.

  12. Argonaute 2 in cell-secreted microvesicles guides the function of secreted miRNAs in recipient cells.

    Directory of Open Access Journals (Sweden)

    Zhiyuan Lv

    Full Text Available MicroRNAs (miRNAs secreted by cells into microvesicles (MVs form a novel class of signal molecules that mediate intercellular communication. However, several fundamental aspects of secreted miRNAs remain unknown, particularly the mechanism that governs the function or fate of exogenous miRNAs in recipient cells. In the present study, we provide evidence indicating that Argonaute 2 (Ago2 plays a role in stabilizing miRNAs and facilitating the packaging of secreted miRNAs into MVs. More importantly, Ago2 in origin cell-secreted MVs (but not in recipient cells directs the function of secreted miRNAs. First, Ago2 overexpression clearly increased the level of miR-16 in cells transfected with a miR-16 mimic by protecting the miRNAs from degradation in lysosomes. Second, Ago2 overexpression increased the level of miR-16 in cell-secreted MVs, suggesting that Ago2 may facilitate the packaging of secreted miRNAs into MVs. Third, exogenous miR-16 delivered by MVs within the origin cells significantly reduced the Bcl2 protein level in recipient cells, and miR-16 and Bcl2 mRNA were physically associated with exogenous HA-tagged Ago2 (HA-Ago2. Finally, the effect of MV-delivered miR-16 on the production of the Bcl2 protein in recipient cells was not abolished by knocking down Ago2 in the recipient cells.

  13. Independent chromatin binding of ARGONAUTE4 and SPT5L/KTF1 mediates transcriptional gene silencing.

    Directory of Open Access Journals (Sweden)

    M Jordan Rowley

    2011-06-01

    Full Text Available Eukaryotic genomes contain significant amounts of transposons and repetitive DNA elements, which, if transcribed, can be detrimental to the organism. Expression of these elements is suppressed by establishment of repressive chromatin modifications. In Arabidopsis thaliana, they are silenced by the siRNA-mediated transcriptional gene silencing pathway where long non-coding RNAs (lncRNAs produced by RNA Polymerase V (Pol V guide ARGONAUTE4 (AGO4 to chromatin and attract enzymes that establish repressive chromatin modifications. It is unknown how chromatin modifying enzymes are recruited to chromatin. We show through chromatin immunoprecipitation (ChIP that SPT5L/KTF1, a silencing factor and a homolog of SPT5 elongation factors, binds chromatin at loci subject to transcriptional silencing. Chromatin binding of SPT5L/KTF1 occurs downstream of RNA Polymerase V, but independently from the presence of 24-nt siRNA. We also show that SPT5L/KTF1 and AGO4 are recruited to chromatin in parallel and independently of each other. As shown using methylation-sensitive restriction enzymes, binding of both AGO4 and SPT5L/KTF1 is required for DNA methylation and repressive histone modifications of several loci. We propose that the coordinate binding of SPT5L and AGO4 creates a platform for direct or indirect recruitment of chromatin modifying enzymes.

  14. Argonaute2 Protein in Rat Spermatogenic Cells Is Localized to Nuage Structures and LAMP2-Positive Vesicles Surrounding Chromatoid Bodies.

    Science.gov (United States)

    Fujii, Yuki; Onohara, Yuko; Fujita, Hideaki; Yokota, Sadaki

    2016-04-01

    Localization of Argonaute2 (AGO2) protein-an essential component for the processing of small interfering RNA (siRNA)-directed RNA interference (RNAi) in RNA-induced silencing complex (RISC) in nuage of rat spermatogenic cells-was evaluated by immunofluorescence microscopy (IFM) and immunoelectron microscopy (IEM). AGO2 was shown, for the first time, to be localized to four previously classified types of nuage: irregularly shaped perinuclear granules (ISPGs), intermitochondrial cement (IMC), satellite bodies (SBs), and chromatoid bodies (CBs). Dual IEM staining for AGO2/Maelstrom (MAEL) protein or AGO2/MIWI protein demonstrated that AGO2 is colocalized with MAEL or MIWI proteins in these types of nuage. Dual IFM and IEM staining of AGO2/lysosomal-associated membrane protein 2 (LAMP2) showed that CB in round spermatids are in contact with and surrounded by LAMP2-positive vesicles, whereas nuage in pachytene spermatocytes are not. Taken together, our findings indicate that: (i) AGO2 in pachytene spermatocytes functions in ISPGs, IMC, and SBs; (ii) AGO2 in round spermatids functions in CBs, and that CBs are associated with lysosomal compartments. PMID:27029769

  15. Expression of the Argonaute protein PiwiL2 and piRNAs in adult mouse mesenchymal stem cells

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Qiuling; Ma, Qi; Shehadeh, Lina A.; Wilson, Amber; Xia, Linghui; Yu, Hong [Department of Molecular and Cellular Pharmacology, Vascular Biology Institute, University of Miami Miller School of Medicine, Miami, FL 33136 (United States); Webster, Keith A., E-mail: kwebster@med.miami.edu [Department of Molecular and Cellular Pharmacology, Vascular Biology Institute, University of Miami Miller School of Medicine, Miami, FL 33136 (United States)

    2010-06-11

    Piwi (P-element-induced wimpy testis) first discovered in Drosophila is a member of the Argonaute family of micro-RNA binding proteins with essential roles in germ-cell development. The murine homologue of PiwiL2, also known as Mili is selectively expressed in the testes, and mice bearing targeted mutations of the PiwiL2 gene are male-sterile. PiwiL2 proteins are thought to protect the germ line genome by suppressing retrotransposons, stabilizing heterochromatin structure, and regulating target genes during meiosis and mitosis. Here, we report that PiwiL2 and associated piRNAs (piRs) may play similar roles in adult mouse mesenchymal stem cells. We found that PiwiL2 is expressed in the cytoplasm of metaphase mesenchymal stem cells from the bone marrow of adult and aged mice. Knockdown of PiwiL2 with a specific siRNA enhanced cell proliferation, significantly increased the number of cells in G1/S and G2/M cell cycle phases and was associated with increased expression of cell cycle genes CCND1, CDK8, microtubule regulation genes, and decreased expression of tumor suppressors Cables 1, LATS, and Cxxc4. The results suggest broader roles for Piwi in genome surveillance beyond the germ line and a possible role in regulating the cell cycle of mesenchymal stem cells.

  16. Expression of the Argonaute protein PiwiL2 and piRNAs in adult mouse mesenchymal stem cells

    International Nuclear Information System (INIS)

    Piwi (P-element-induced wimpy testis) first discovered in Drosophila is a member of the Argonaute family of micro-RNA binding proteins with essential roles in germ-cell development. The murine homologue of PiwiL2, also known as Mili is selectively expressed in the testes, and mice bearing targeted mutations of the PiwiL2 gene are male-sterile. PiwiL2 proteins are thought to protect the germ line genome by suppressing retrotransposons, stabilizing heterochromatin structure, and regulating target genes during meiosis and mitosis. Here, we report that PiwiL2 and associated piRNAs (piRs) may play similar roles in adult mouse mesenchymal stem cells. We found that PiwiL2 is expressed in the cytoplasm of metaphase mesenchymal stem cells from the bone marrow of adult and aged mice. Knockdown of PiwiL2 with a specific siRNA enhanced cell proliferation, significantly increased the number of cells in G1/S and G2/M cell cycle phases and was associated with increased expression of cell cycle genes CCND1, CDK8, microtubule regulation genes, and decreased expression of tumor suppressors Cables 1, LATS, and Cxxc4. The results suggest broader roles for Piwi in genome surveillance beyond the germ line and a possible role in regulating the cell cycle of mesenchymal stem cells.

  17. Collapse of germline piRNAs in the absence of Argonaute3 reveals somatic piRNAs in flies.

    Science.gov (United States)

    Li, Chengjian; Vagin, Vasily V; Lee, Soohyun; Xu, Jia; Ma, Shengmei; Xi, Hualin; Seitz, Hervé; Horwich, Michael D; Syrzycka, Monika; Honda, Barry M; Kittler, Ellen L W; Zapp, Maria L; Klattenhoff, Carla; Schulz, Nadine; Theurkauf, William E; Weng, Zhiping; Zamore, Phillip D

    2009-05-01

    Piwi-interacting RNAs (piRNAs) silence transposons in animal germ cells. piRNAs are thought to derive from long transcripts spanning transposon-rich genomic loci and to direct an autoamplification loop in which an antisense piRNA, bound to Aubergine or Piwi protein, triggers production of a sense piRNA bound to the PIWI protein Argonaute3 (Ago3). In turn, the new piRNA is envisioned to produce a second antisense piRNA. Here, we describe strong loss-of-function mutations in ago3, allowing a direct genetic test of this model. We find that Ago3 acts to amplify piRNA pools and to enforce on them an antisense bias, increasing the number of piRNAs that can act to silence transposons. We also detect a second, Ago3-independent piRNA pathway centered on Piwi. Transposons targeted by this second pathway often reside in the flamenco locus, which is expressed in somatic ovarian follicle cells, suggesting a role for piRNAs beyond the germline. PMID:19395009

  18. Tobacco rattle virus 16K silencing suppressor binds ARGONAUTE 4 and inhibits formation of RNA silencing complexes.

    Science.gov (United States)

    Fernández-Calvino, Lourdes; Martínez-Priego, Llúcia; Szabo, Edit Z; Guzmán-Benito, Irene; González, Inmaculada; Canto, Tomás; Lakatos, Lóránt; Llave, César

    2016-01-01

    The cysteine-rich 16K protein of tobacco rattle virus (TRV), the type member of the genus Tobravirus, is known to suppress RNA silencing. However, the mechanism of action of the 16K suppressor is not well understood. In this study, we used a GFP-based sensor strategy and an Agrobacterium-mediated transient assay in Nicotiana benthamiana to show that 16K was unable to inhibit the activity of existing small interfering RNA (siRNA)- and microRNA (miRNA)-programmed RNA-induced silencing effector complexes (RISCs). In contrast, 16K efficiently interfered with de novo formation of miRNA- and siRNA-guided RISCs, thus preventing cleavage of target RNA. Interestingly, we found that transiently expressed endogenous miR399 and miR172 directed sequence-specific silencing of complementary sequences of viral origin. 16K failed to bind small RNAs, although it interacted with ARGONAUTE 4, as revealed by bimolecular fluorescence complementation and immunoprecipitation assays. Site-directed mutagenesis demonstrated that highly conserved cysteine residues within the N-terminal and central regions of the 16K protein are required for protein stability and/or RNA silencing suppression. PMID:26498945

  19. Estudio de viabilidad de hotel urbano de 4 estrellas en la ciudad de Barcelona

    OpenAIRE

    Expósito Sarmiento, Gil

    2010-01-01

    El estudio realizado trata sobre la implantación de un hotel de 4* en la ciudad de Barcelona, herramienta con la cual una cadena hotelera Americana pretende entrar en el mercado europeo. Barcelona es la ciudad trampolín escogida para dar el salto a este mercado. El hecho de que el motivo principal del proyecto no sea el hacer simplemente una inversión económica no impide que la sociedad haga un estudio de viabilidad para averiguar si este es factible, o sea rentable. La única d...

  20. La salsa en Barcelona: inmigración, identidad, músicas latinas y baile

    OpenAIRE

    Llano Camacho, Isabel

    2015-01-01

    La difusión de la salsa en España se inicia desde 1970 con la promoción de cantantes realizada por el sello discográfico Fania, sin embargo, en Barcelona es desde 1980 cuando empieza la popularización de músicos y orquestas a través de la radio, conciertos en directo, y cuando las orquestas locales interpretan famosas canciones de salsa del momento. En Barcelona, el estilo de baile cubano fue el primero en difundirse a inicios de 1990. Sin embargo, el estilo Los Ángeles comenzó a proliferar d...

  1. L'escultura romànica del palau episcopal de Barcelona

    OpenAIRE

    Lorés, Immaculada

    1993-01-01

    Durante los primeros años del siglo XIII, o quizás un poco antes, llegaron a Barcelona escultores que se encargaron de la realización de obras como la puerta de la catedral de Barcelona, la fachada y el claustro del monasterio de Sant Pau del Camp o los capiteles del patio del Palacio Episcopal. La escultura conservada de la residencia obispal, al tiempo que presenta claras relaciones con Sant Pau del Camp, es una muestra de la confluencia de las diferentes corrientes que permi...

  2. La construcció en l'arquitectura de Barcelona a final del segle XVIII.

    OpenAIRE

    Rosell Colomina, Jaume

    1996-01-01

    A partir de l'arxiu Renart dipositat a la Biblioteca de Catalunya, s'estudien els papers de Josep Renart i Closes (Barcelona 1746-1824), un destacat mestre de cases al servei de la Corona i també incipient professional liberal. Renart és important, sobretot, perquè va escriure una sèrie de textos encara inèdits, Els quinzenaris (dels que se n'ha transcrit una part) on passa revista a l'arquitectura barcelonina i a la construcció catalana del seu temps. Precisament en aquell temps Barcelona ex...

  3. Ginebra y Barcelona: breve relato de un señalado encuentro

    OpenAIRE

    Coll, César

    1994-01-01

    El 12 de noviembre de 1970 el profesor Jean Piaget era investido doctor honoris causa por la Universidad de Barcelona. Con motivo de aquel acto, el Departamento de Psicologia de la, en aquellos momentos, Facultad de Filosofia y Letras de la Universidad de Barcelona organizó un seminario de varios dias de duración sobre psicologia genética. El seminario estuvo dirigido por las profesoras Barbel Inhelder e Irhe Lézine, estrechas colaboradoras del profesor Piaget en Ginebra y Paris respectivamen...

  4. Architectural measures aimed at solving the problem of aircraft noise in buildings : the Barcelona Airport experience

    OpenAIRE

    Zamora i Mestre, Joan-Lluís

    2007-01-01

    Coinciding with the start of construction of the new extension of Barcelona airport (El Prat), the Executive Office of the Barcelona Plan (OEPB), depending on Spanish Airports and Air Navigation (AENA), was set up to manage all works related to this extension. The OEPB developed a specific Plan for Acoustic Insulation based on the DIA (Declaration of Environmental Impact, dated 9 January 2002) in order to deal with the acoustic impact of the opening of the third runway, the new joint use of t...

  5. Women's paid work in an urban developing economy. Barcelona in 1930

    OpenAIRE

    Domènech Feliu, Jordi; Elu-Terán, Alexander

    2008-01-01

    Este artículo explora los determinantes del trabajo de las mujeres en la ciudad de Barcelona en 1930. Aunque las tasas de participación en Barcelona eran muy inferiores a las de algunas ciudades británicas o estadounidenses durante el mismo período de tiempo, nuestras estimaciones de la oferta de trabajo sugieren que las mujeres barcelonesas respondían positivamente a los estímulos salariales. Sin embargo, la característica más sobresaliente de la organización familiar del t...

  6. Air quality in schools and children’s exposure to particulate pollution in Barcelona

    OpenAIRE

    Rivas Lara, Ioar

    2015-01-01

    L’exposició als contaminants atmosfèrics s’ha relacionat amb efectes negatius a la salut i els infants constitueixen un subgrup de la població particularment vulnerable. Es determinà la qualitat de l’aire a l’interior i exterior de 39 escoles de Barcelona i Sant Cugat del Vallès. El mateixos contaminants mesurats a les escoles també es monitoritzaren a una estació de fons urbà a Barcelona (UB-PR). Les concentracions de carboni negre equivalent (EBC), NO2 i partícules ultrafines (UFP) m...

  7. Proyecto alternativo de remodelación del Testero del Muelle de Ergransa, Barcelona.

    OpenAIRE

    García Díez, Alejandro

    2011-01-01

    Este trabajo va a consistir en plantear un proyecto alternativo a la reforma que se llevó a cabo en el muelle testero de Ergransa en el Puerto de Barcelona. Primero explicaré en que consistió esta renovación y como se desarrolló su proceso constructivo. El proyecto se ideó con el fin de reparar un muelle testero del Puerto de Barcelona fuertemente deteriorado, debido a su construcción hace ya casi un siglo y su uso constante durante las últimas décadas, por encontrarse en una zona de gran act...

  8. Structural assessment of the masonry vaults of a pavilion of Hospital de Sant Pau in Barcelona

    OpenAIRE

    Endo, Yohei; Roca Fabregat, Pedro; Pelà, Luca; García, Joan Francesc; Zazurca, Mercè

    2014-01-01

    The large complex of Hospital de la Santa Creu i de Sant Pau in Barcelona, built between 1901 and 1930 and designed (in their largest part) by architect Lluís Domènech i Montaner, constitute one of the major examples of the Catalan Modernism which flourished in Barcelona in the early 20th century. The historical part of the complex was inscribed as UNESCO World Heritage Site in 1997. In addition to their interesting architectural and aesthetic value, the buildings draw attention because of th...

  9. Nuclear Reactors

    Energy Technology Data Exchange (ETDEWEB)

    Hogerton, John

    1964-01-01

    This pamphlet describes how reactors work; discusses reactor design; describes research, teaching, and materials testing reactors; production reactors; reactors for electric power generation; reactors for supply heat; reactors for propulsion; reactors for space; reactor safety; and reactors of tomorrow. The appendix discusses characteristics of U.S. civilian power reactor concepts and lists some of the U.S. reactor power projects, with location, type, capacity, owner, and startup date.

  10. Australia's replacement research reactor project

    International Nuclear Information System (INIS)

    HIFAR, a 10 MW tank type DIDO Class reactor has operated at the Lucas Heights Science and Technology Centre for 43 years. HIFAR and the 10 kW Argonaut reactor 'Moata' which is in the Care and Maintenance phase of decommissioning are Australia's only nuclear reactors. The initial purpose for HIFAR was for materials testing to support a nuclear power program. Changing community attitude through the 1970's and a Government decision not to proceed with a planned nuclear power reactor resulted in a reduction of materials testing activities and a greater emphasis being placed on neutron beam research and the production of radioisotopes, particularly for medical purposes. HIFAR is not fully capable of satisfying the expected increase in demand for medical radiopharmaceuticals beyond the next 5 years and the radial configuration of the beam tubes severely restricts the scope and efficiency of neutron beam research. In 1997 the Australian Government decided that a replacement research reactor should be built by the Australian Nuclear Science and Technology Organisation at Lucas Heights subject to favourable results of an Environmental Impact Study. The Ei identified no reasons on the grounds of safety, health, hazard or risk to prevent construction on the preferred site and it was decided in May 1999 that there were no environmental reasons why construction of the facility should not proceed. In recent years ANSTO has been reviewing the operation of HIFAR and observing international developments in reactor technology. Limitations in the flexibility and efficiency achievable in operation of a tank type reactor and the higher intrinsic safety sought in fundamental design resulted in an early decision that the replacement reactor must be a pool type having cleaner and higher intensity tangential neutron beams of wider energy range than those available from HIFAR. ANSTO has chosen to use it's own resources supported by specialised external knowledge and experience to identify

  11. Barcelona's water supply, 1867–1967 : the transition to a modern system

    OpenAIRE

    Guàrdia Bassols, Manuel; Rosselló i Nicolau, Maribel; Garriga Bosch, Sergi

    2013-01-01

    Barcelona's water supply since 14th century to 1867, the Eixample's water supply problem the development of modern water supply since 1867 to 1967 the new sanitation system impact on water consumption water's slow entry into the domestic sphere from post-war restrictions to widespread water consumption. Peer Reviewed

  12. Reading and censorship in early modern Europe Barcelona, 11-13 de diciembre de 2007 /

    OpenAIRE

    Vega Ramos, María José; Esteve, Cesc; Weiss, Julian

    2010-01-01

    La col·lecció Studia Aurea Monográfica, coeditada por la Universitat Autònoma de Barcelona y la Universitat de Girona, es una colección auspiciada por Studia Aurea. Revista de Literatura Española y Teoría Literaria del Renacimiento y Siglo de Oro.

  13. Trends in socioeconomic inequalities in cancer mortality in Barcelona: 1992–2003

    Directory of Open Access Journals (Sweden)

    Pasarín M Isabel

    2009-01-01

    Full Text Available Abstract Background The objective of this study was to assess trends in cancer mortality by educational level in Barcelona from 1992 to 2003. Methods The study population comprised Barcelona inhabitants aged 20 years or older. Data on cancer deaths were supplied by the system of information on mortality. Educational level was obtained from the municipal census. Age-standardized rates by educational level were calculated. We also fitted Poisson regression models to estimate the relative index of inequality (RII and the Slope Index of Inequalities (SII. All were calculated for each sex and period (1992–1994, 1995–1997, 1998–2000, and 2001–2003. Results Cancer mortality was higher in men and women with lower educational level throughout the study period. Less-schooled men had higher mortality by stomach, mouth and pharynx, oesophagus, larynx and lung cancer. In women, there were educational inequalities for cervix uteri, liver and colon cancer. Inequalities of overall and specific types of cancer mortality remained stable in Barcelona; although a slight reduction was observed for some cancers. Conclusion This study has identified those cancer types presenting the greatest inequalities between men and women in recent years and shown that in Barcelona there is a stable trend in inequalities in the burden of cancer.

  14. Spatial variability of trace elements and sources for improved exposure assessment in Barcelona

    NARCIS (Netherlands)

    Minguillón, M.C.; Cirach, M.; Hoek, G.; Brunekreef, B.; Tsai, M.; Hoogh, K. de; Jedynska, A.; Kooter, I.M.; Nieuwenhuijsen, M.; Querol, X.

    2014-01-01

    Trace and major elements concentrations in PM10 and PM2.5 were measured at 20 sites spread in the Barcelona metropolitan area (1 rural background, 6 urban background, 13 road traffic sites) and at 1 reference site. Three 2-week samples per site and size fraction were collected during 2009 using low

  15. Teaching and Learning in the Virtual Campus: The Case of the University of Barcelona

    Science.gov (United States)

    Gil, Juana M. Sancho; Sanchez, Joan-Anton

    2012-01-01

    This article is based on a research project aimed at analysing the teaching and learning models explicit and implicit in the different uses of e-learning platforms. From qualitative analysis of the interview with the coordinator of the Virtual Campus of the University of Barcelona (VC-UB) and the focus group with the 8 lecturers, emerged both the…

  16. Assessing public leadership styles for innovation: A comparison of Copenhagen, Rotterdam and Barcelona

    DEFF Research Database (Denmark)

    Ricard, Lykke Margot; Klijn, Erik Hans; Lewis, Jenny M.;

    2016-01-01

    This article explores which leadership qualities public managers regard as important for public innovation. It is based on a survey of 365 senior public managers in Copenhagen, Rotterdam and Barcelona. Five perspectives on leadership were identified and tested using a number of items. Some of these...

  17. A conceptual model to manage supply sequences in automotive industry for Nissan Barcelona

    OpenAIRE

    Bautista Valhondo, Joaquín; Fortuny Santos, Jordi

    2015-01-01

    This paper presents an action research experience in Douki-Seisan in cooperation with the Nissan Factory in Barcelona. Three suppliers are involved in the experience to improve the way they perform synchro deliveries of parts to Nissan. Supplier issues are analysed and a decision making tool is developed for a supplier.

  18. The Barcelona-Catania-Paris-Madrid functional with a realistic effective mass

    CERN Document Server

    Baldo, M; Schuck, P; Viñas, X

    2016-01-01

    The Barcelona-Catania-Paris-Madrid (BCPM) functional recently proposed to describe nuclear structure properties of finite nuclei is generalized as to include a realistic effective mass. The resulting functional is as good as the previous one in describing binding energies, radii, deformation properties, etc and, in addition, the description of Giant Quadrupole Resonance energies is greatly improved.

  19. From Strategic Planning to Development Initiatives: a first reflection on the situation of Lisbon and Barcelona

    OpenAIRE

    Marques, Bruno Pereira

    2014-01-01

    MARQUES, B.P. (2014) From Strategic Planning to Development Initiatives: a first reflection on the situation of Lisbon and Barcelona, in 20th APDR Congress Proceddings, APDR and UÉvora, Évora, pp. 850-857, ISBN 978-989-8780-01-0.

  20. La ciudad fingida. Representaciones y memorias de la Barcelona turística

    Directory of Open Access Journals (Sweden)

    Palou Rubio, Saida

    2006-01-01

    Full Text Available The current article is focused on tourist pictures of Barcelona. Those highly sponsored pictures of the city that some times match the reality and some others do not; however true or false they share the same stereotyped and fake image. The picture of the tourist Barcelona shows a general image (an ideal representation of the city, and this idealization creates several clichés that provide the city with its own special flavour and identity. This widely spread picture of Barcelona selects and presents several pieces and corners of the city that naturally become direct associations to it. This procedure of making reference points out of the resources the city has is not only efficient but can also confuse its real façade. A façade that most tourists can only glance at turning it as superficial and ephemeral as it is portrayed and assuming this sponsored image of Barcelona. The gap between such tourist pictures and the reality damages the identity of the city as this type of imposed pictures aid the creation of such clichés

  1. Barcelona entre restos e silêncios : a persistência da desmemoria

    Directory of Open Access Journals (Sweden)

    Elisa Amorim Vieira

    2009-06-01

    os relatos do escritor inglês George Orwell, testemunha dos conflitos que cercam a Barcelona revolucionária, à narrativa da série de documentários intitulada España en Guerra (1936- 39, produzida pela TVE, em 1986.

  2. Valuation of travel time savings for intercity travel: The Madrid-Barcelona corridor

    DEFF Research Database (Denmark)

    Roman, Concepcion; Carlos Martin, Juan; Espino, Raquel;

    2014-01-01

    We derive values of travel time savings (VOT) for the Madrid-Barcelona corridor, linking the two largest cities in Spain, based on the estimation of discrete choice models among the main public transport services in the corridor: air transport, high speed rail (HSR) and bus. The new HSR alternative...

  3. Specific argonautes selectively bind small RNAs derived from potato spindle tuber viroid and attenuate viroid accumulation in vivo.

    Science.gov (United States)

    Minoia, Sofia; Carbonell, Alberto; Di Serio, Francesco; Gisel, Andreas; Carrington, James C; Navarro, Beatriz; Flores, Ricardo

    2014-10-01

    The identification of viroid-derived small RNAs (vd-sRNAs) of 21 to 24 nucleotides (nt) in plants infected by viroids (infectious non-protein-coding RNAs of just 250 to 400 nt) supports their targeting by Dicer-like enzymes, the first host RNA-silencing barrier. However, whether viroids, like RNA viruses, are also targeted by the RNA-induced silencing complex (RISC) remains controversial. At the RISC core is one Argonaute (AGO) protein that, guided by endogenous or viral sRNAs, targets complementary RNAs. To examine whether AGO proteins also load vd-sRNAs, leaves of Nicotiana benthamiana infected by potato spindle tuber viroid (PSTVd) were agroinfiltrated with plasmids expressing epitope-tagged versions of AGO1, AGO2, AGO3, AGO4, AGO5, AGO6, AGO7, AGO9, and AGO10 from Arabidopsis thaliana. Immunoprecipitation analyses of the agroinfiltrated halos revealed that all AGOs except AGO6, AGO7, and AGO10 associated with vd-sRNAs: AGO1, AGO2, and AGO3 preferentially with those of 21 and 22 nt, while AGO4, AGO5, and AGO9 additionally bound those of 24 nt. Deep-sequencing analyses showed that sorting of vd-sRNAs into AGO1, AGO2, AGO4, and AGO5 depended essentially on their 5'-terminal nucleotides, with the profiles of the corresponding AGO-loaded vd-sRNAs adopting specific hot spot distributions along the viroid genome. Furthermore, agroexpression of AGO1, AGO2, AGO4, and AGO5 on PSTVd-infected tissue attenuated the level of the genomic RNAs, suggesting that they, or their precursors, are RISC targeted. In contrast to RNA viruses, PSTVd infection of N. benthamiana did not affect miR168-mediated regulation of the endogenous AGO1, which loaded vd-sRNAs with specificity similar to that of its A. thaliana counterpart. Importance: To contain invaders, particularly RNA viruses, plants have evolved an RNA-silencing mechanism relying on the generation by Dicer-like (DCL) enzymes of virus-derived small RNAs of 21 to 24 nucleotides (nt) that load and guide Argonaute (AGO) proteins to

  4. Urban Governance of Employment Activation. The Case of Barcelona Activa (Spain Governança urbana em ativação do emprego: o caso de Barcelona Activa (Espanha

    Directory of Open Access Journals (Sweden)

    Alessandro Gentile

    2011-09-01

    Full Text Available Within the framework of rescaling nation-State and improving new modes of governance, activation policieshave to be interpreted as qualified initiatives for economic growth and social integration at a subnationallevel and, specifically, in regional and urban contexts. Barcelona Activa is the local agency of theBarcelona City Council (Spain designed for business improvement and employment quality through horizontalsubsidiary and public-private partnerships. This agency acts as a pivotal body of the municipaladministration in order to implement a variety of programs aimed at labour and professional empowerment,small and medium-sized companies creation and urban marketing. The paper focuses on BarcelonaActiva’s strategies, outcomes and criticisms in the current financial crisis, approaching its institutional rolefor the development of Barcelona as one of the main southern gateways to Europe.

  5. A Potential Protein-RNA Recognition Event Along the RISC-Loading Pathway from the Structure of A. aeolicus Argonaute with Externally Bound siRNA

    Energy Technology Data Exchange (ETDEWEB)

    Yuan,Y.; Pei, Y.; Chen, H.; Tuschl, T.; Patel, D.

    2006-01-01

    Argonaute proteins are key components of the RNA-induced silencing complex (RISC). They provide both architectural and catalytic functionalities associated with small interfering RNA (siRNA) guide strand recognition and subsequent guide strand-mediated cleavage of complementary mRNAs. We report on the 3.0 {angstrom} crystal structures of 22-mer and 26-mer siRNAs bound to Aquifex aeolicus Argonaute (Aa-Ago), where one 2 nt 3' overhang of the siRNA inserts into a cavity positioned on the outer surface of the PAZ-containing lobe of the bilobal Aa-Ago architecture. The first overhang nucleotide stacks over a tyrosine ring, while the second overhang nucleotide, together with the intervening sugar-phosphate backbone, inserts into a preformed surface cavity. Photochemical crosslinking studies on Aa-Ago with 5-iodoU-labeled single-stranded siRNA and siRNA duplex provide support for this externally bound siRNA-Aa-Ago complex. The structure and biochemical data together provide insights into a protein-RNA recognition event potentially associated with the RISC-loading pathway.

  6. Natural variation of the amino-terminal glutamine-rich domain in Drosophila argonaute2 is not associated with developmental defects.

    Directory of Open Access Journals (Sweden)

    Daniel Hain

    Full Text Available The Drosophila argonaute2 (ago2 gene plays a major role in siRNA mediated RNA silencing pathways. Unlike mammalian Argonaute proteins, the Drosophila protein has an unusual amino-terminal domain made up largely of multiple copies of glutamine-rich repeats (GRRs. We report here that the ago2 locus produces an alternative transcript that encodes a putative short isoform without this amino-terminal domain. Several ago2 mutations previously reported to be null alleles only abolish expression of the long, GRR-containing isoform. Analysis of drop out (dop mutations had previously suggested that variations in GRR copy number result in defects in RNAi and embryonic development. However, we find that dop mutations genetically complement transcript-null alleles of ago2 and that ago2 alleles with variant GRR copy numbers support normal development. In addition, we show that the assembly of the central RNAi machinery, the RISC (RNA induced silencing complex, is unimpaired in embryos when GRR copy number is altered. In fact, we find that GRR copy number is highly variable in natural D. melanogaster populations as well as in laboratory strains. Finally, while many other insects share an extensive, glutamine-rich Ago2 amino-terminal domain, its primary sequence varies drastically between species. Our data indicate that GRR variation does not modulate an essential function of Ago2 and that the amino-terminal domain of Ago2 is subject to rapid evolution.

  7. miRNA–target chimeras reveal miRNA 3′-end pairing as a major determinant of Argonaute target specificity

    Science.gov (United States)

    Moore, Michael J.; Scheel, Troels K. H.; Luna, Joseph M.; Park, Christopher Y.; Fak, John J.; Nishiuchi, Eiko; Rice, Charles M.; Darnell, Robert B.

    2015-01-01

    microRNAs (miRNAs) act as sequence-specific guides for Argonaute (AGO) proteins, which mediate posttranscriptional silencing of target messenger RNAs. Despite their importance in many biological processes, rules governing AGO–miRNA targeting are only partially understood. Here we report a modified AGO HITS-CLIP strategy termed CLEAR (covalent ligation of endogenous Argonaute-bound RNAs)-CLIP, which enriches miRNAs ligated to their endogenous mRNA targets. CLEAR-CLIP mapped ∼130,000 endogenous miRNA–target interactions in mouse brain and ∼40,000 in human hepatoma cells. Motif and structural analysis define expanded pairing rules for over 200 mammalian miRNAs. Most interactions combine seed-based pairing with distinct, miRNA-specific patterns of auxiliary pairing. At some regulatory sites, this specificity confers distinct silencing functions to miRNA family members with shared seed sequences but divergent 3′-ends. This work provides a means for explicit biochemical identification of miRNA sites in vivo, leading to the discovery that miRNA 3′-end pairing is a general determinant of AGO binding specificity. PMID:26602609

  8. The Role of Bullfighting and FC Barcelona in the Emancipation of Catalonia from Spain (El papel de la corrida de toros y FC Barcelona en la emancipación de Cataluña de España)

    OpenAIRE

    TKac, John A.

    2014-01-01

    Abstract: This paper looks at the role that bullfighting and FC Barcelona have played in the growing independence movement in Catalonia. This article will discuss nations, the importance of bullfighting and soccer to Iberian cultures, Catalan political parties and their role in the nationalist movement, the vote to prohibit bullfighting and FC Barcelona´s increasing political conscious. I conclude that bullfighting and soccer have been used by political parties and those associated with the n...

  9. Use of research reactors for training and teaching nuclear sciences

    International Nuclear Information System (INIS)

    Training activities on reactors are organized by Cea on 2 specially dedicated reactors Ulysse (Saclay) and Siloette (Grenoble) and 2 research reactors Minerve (Cadarache) and Azur (Cadarache, facility managed by Technicatome). About 4000 students have been trained on Ulysse since its commissioning more than 40 years ago. The concept that led to the design of Ulysse was to build a true reactor dedicated to teaching and training activities and that was able to operate with great flexibility and under high conditions of safety, this reactor is inspired from the Argonaut-type reactor. The main specificities of Ulysse are: a nominal power of 100 kW, a maximal thermal neutron flux of 1.4 1012 n.cm-2.s-1, a 90 % enriched fuel, a graphite reflector, the use of water as coolant and moderator, and 6 cadmium plates as control rods. Ulysse allows students to get practical experience on a large range of topics: approach to criticality, effect of the starting neutron source, calibration of control rods, distribution of the neutron flux in the thermal column, temperature coefficient, radiation detectors, neutron activation analysis, and radioprotection. (A.C.)

  10. Muusikamaailm : Sibeliuse preemia laureaat on Ligeti. Uusooperid Turus, Milanos, Barcelonas. Aasta dirigent on Daniel Barenboim / Priit Kuusk

    Index Scriptorium Estoniae

    Kuusk, Priit, 1938-

    2000-01-01

    Wihuri fondi Sibeliuse preemia sai G. Ligeti. Uusooperitest Turu toomkirikus, Milano La Scala ja Barcelona Gran Teatre del Liceu laval. D. Barenboim pälvis heliplaadipreemia Echo Klassik koos aasta dirigendi 2000 tiitliga

  11. Evolution of industrial wastewater pollution in the Barcelona Metropolitan Area; Evolucion de la contaminacion industrial en las aguas residuales del area metropolitana de Barcelona

    Energy Technology Data Exchange (ETDEWEB)

    Mantecon Pascual, R.

    2005-07-01

    The Environmental Agency of the Barcelona Metropolitan Area has full powers regarding sewerage. Industrial wastewater emptied into the public sewer system has been monitored and analysed since 1988. the data showing the evolution of the pollution in industrial wastewater are presented, broken down by activities and parameters. These data are based on the analysis of 14,528 samples taken during 19,555 inspections of 5,655 factories. It was found that there has been a gradual improvement in the quality of the effluents. Failure to meet the requirements concerning one or more of the physico-chemical parameters fell from 71% to 39% of the samples analysed. (Author)

  12. Patrimonios incómodos para la imagen que Barcelona ofrece al mundo

    Directory of Open Access Journals (Sweden)

    Reventós Gil de Biedma, Ana

    2007-01-01

    Full Text Available Barcelona is today a city of reference within the world’s tourist map. Created as a process of both an economic evolution towards the third sector as well as a powerful brand image, from the Olympics up to nowadays. Within this scene, Culture and Arts have been pushed at the center of the strategy, building a “cultural spectacle” aimed to differentiate the city’s offer in the market. Furthermore, some specific icons oriented to give it a Catalan, Cosmopolitan and Modern identity are promoted, adding also new symbolic values such as diversity, tolerance or Mediterranean character. Meaning that some range of cultural heritages should be reinforced while others are put aside or even hidden. Barcelona appears then as the result of a perfectly drawn political strategic planning, under the appearance of social consensus and citizens’ involvement

  13. Environmental metabolism of educational services : case study of nursery schools in the city of Barcelona

    OpenAIRE

    Sanjuan Delmás, David; Petit, Anna; Martínez Blanco, Julia; Rieradevall, Joan

    2015-01-01

    The environmental analysis of public nursery schools is of great interest since they are crucial in the early education of children and are expected to show high environmental standards. This paper aims to analyse the environmental profile (energy, water and transport flows) of this sector. A sample of 12 public nursery schools belonging to the Scholar Agenda 21 (SA21) of the city of Barcelona were selected given their data quality (eight centres applied to all analysis) to determine their en...

  14. Servicios bibliotecarios para poblaciones de la provincia de Barcelona menores de 3000 habitantes.

    OpenAIRE

    Comalat, Maite; Reyes, Lourdes; Rodríguez, Concepción

    1998-01-01

    Planificación y desarrollo de un estudio sobre los servicios de información y lectura en municipios de menos de 3.000 habitantes de la provincia de Barcelona. A partir del trabajo de campo sobre necesidades de los usuarios y su situación socioeconómica y cultural se señala la metodología seguida así como la respuesta obtenida de los municipios implicados.

  15. The relation between energy consumption and developed land; a model for the metropolitan area of Barcelona

    OpenAIRE

    Cerda, Jorge; Romano, Yraida; Perez, Claudia; Roca, Josep

    2011-01-01

    The study of the developed land and the energy consumption is part of a main project, which objective is the development of a model for the evaluation of the environmental and energy efficiency of the interaction (mobility) and land use structure (called as 'territorial functionality'), applied to the metropolitan area of Barcelona . One of the most important points of the main project is the modeling of energy consumption, and developed land produced by the territorial functionality. This pa...

  16. Official Report of the Games of the XXV Olympiad Barcelona 1992

    OpenAIRE

    2014-01-01

    COOB’92 was the first Organising Committee to offer an Official Report in four separate editions. Indeed, the “Official Report of the Games of the XXV Olympiad Barcelona 1992” exists in French, English, Spanish and Catalan. Each edition consists of five volumes (The challenge; The means; The organisation; The Games; The results). Volume 5 was quadrilingual, so identical for each edition, and came with two diskettes containing the biographies of the Olympic medallists. Vol 1 Part I: The city ;...

  17. Seawater intrusion barrier in the deltaic Llobregat aquifer (Barcelona, Spain): performance and pilot phase results

    OpenAIRE

    Ortuño Gobern, Felip; Molinero Huguet, Jorge José; Custodio Gimena, Emilio; Juárez Álvarez, Iker; Garrido, Teresa; Fraile, Josep

    2011-01-01

    The main aquifer of the Llobregat Delta (Barcelona, Spain) is affected by seawater intrusion processes since the 1960s. The Catalan Water Agency is currently promoting several actions of artificial aquifer recharge, including the construction of a positive hydraulic barrier in order to stop the advance of the seawater intrusion. Such a positive hydraulic barrier works by injecting reclaimed water in 14 wells. This is the first time that a project of this type is performed in Spain and i...

  18. Virtual Visit to the ATLAS Control Room by the University of Barcelona

    CERN Multimedia

    2013-01-01

    Future Learning is an initiative at the University of Barcelona - Faculty of Pedagogy and Education - aimed at developing research on the educational, cultural and socio-economic aspects of the use of ICT in learning settings, with special emphasis on virtual learning and eLearning. In the framework of the PATHWAY EU project, Future Learning is leading a series of teacher training activities around the CERN mini-exhibition that is touring Spain this year.

  19. El comercio de los inmigrantes en el centro histórico de Barcelona en 2004

    OpenAIRE

    Serra del Pozo, Pau

    2006-01-01

    In the last decade the increasing number of foreign immigrants in Catalonia has been especially apparent in the Ciutat Vella district of Barcelona, where immigrants’ shops have multiplied. The Ciutat Vella immigrant shops have several features such as small size, a long working day and the presence of employed relatives together with other employees of the same origin as that of the employer. The dominant typologies of the shops are: groceries, tele shops, money transfer (for remittances), ba...

  20. Oral Health-Related Quality of Life in institutionalized elderly in Barcelona (Spain)

    OpenAIRE

    Cornejo, Marco; Pérez de, Gloria; Lima, Kenio-Costa de; Casals Peidró, Elías; Borrell, Carme

    2013-01-01

    Objective: The objective of this study is to describe the oral health status and the factors associated with oral health-related quality of life (OHRQoL) in people aged 65 and older institutionalized in Barcelona in 2009. Study Design: Cross sectional study in 194 elderly. The dependent variable was poor OHRQoL, according to the Geriatric Oral Health Assessment Index (GOHAI). The independent variables were socio-demographic data, last dental visit, subjective and objective oral health status....

  1. Scientific 'marvels' in the public sphere : Barcelona and its 1888 International Exhibition

    OpenAIRE

    Nieto-Galan, Agustí

    2012-01-01

    This paper examines the scientific culture of the 1888 Barcelona International Exhibition from different perspectives. Firstly, it emphasises how controversy rather than consensus imbued the everyday life of the city during that exceptional event, from April to December 1888. Secondly, the article discusses how science—including science, technology and medicine—became a tool in political debates about the pros and contras of the exhibition. Thirdly, through the careful analysis of particular ...

  2. New analytical model to generalize the Barcelona Test using axial displacement

    OpenAIRE

    Pujadas Álvarez, Pablo; Blanco Álvarez, Ana; Pialarissi Cavalaro, Sergio Henrique; Fuente Antequera, Albert de la; Aguado de Cea, Antonio

    2013-01-01

    The Barcelona Test has proved to be very suitable for the systematic control of the tensile properties of Fibre Reinforced Concrete (FRC). Nevertheless, the need to measure the total circumferential opening displacement (TCOD) of the specimen entails the use of an expensive circumferential extensometer. In order to simplify the test, studies from the literature propose the use of the axial displacement of the press (δ) instead of the TCOD, obtaining empirical equations to correlate the energy...

  3. Sustainable development program at the Faculty of Nautical Studies of Barcelona, Nautical engineering education

    OpenAIRE

    Castells Sanabra, Marcel·la; Martín Mallofré, Agustí; Ordás Jiménez, Santiago; Aguilar, S.; Solé, M

    2011-01-01

    Nautical engineering education institutions play an important role and are a key tool in the future sustainable maritime transport and naval world. This paper addresses the role of nautical engineering education in the learning and implementation of the competence of sustainability and social commitment (SSC) in the Nautical Faculty of Barcelona and presents results of the first year of the implementation of the environmental program STEP2015 at the Universitat Politècnica de C...

  4. Celosvětová marketingová strategie klubu FC Barcelona

    OpenAIRE

    Podzimek, David

    2013-01-01

    This bachelor's dissertation concerns itself with the marketing strategy of the FC Barcelona football club, as a leading European mega-club and one of the most popular sports clubs in the world. The work endeavours to analyse the approach of the aforementioned club to its marketing activities undertaken on a global scale and to inspect the prerequisites for the functioning of its marketing strategy using the example of domestic football fans and based on an evaluation of marketing research, w...

  5. Desarrollo de la materia Proyectos. Grado de Comunicación Audiovisual. Universitat de Barcelona

    OpenAIRE

    Romeo Delgado, Marina; Yepes i Baldó, Montserrat; Burset Burillo, Sílvia; García Asensio, Ma. Ángeles; González Argüello, Ma. Vicenta (María Vicenta); Sánchez, Lydia; Berger, Rita

    2012-01-01

    El objetivo del presente trabajo es presentar la propuesta de desarrollo de la materia Proyectos del Grado de Comunicación Audiovisual de la Universidad de Barcelona, que incluye las asignaturas Proyectos I y Proyectos II. Ambas asignaturas son especialmente idóneas para trabajar las competencias transversales del grado, dado que el objetivo de la materia a la que pertenecen es integrar las competencias adquiridas en el conjunto de asignaturas cursadas por los alumnos hasta este momento, poni...

  6. Continuous atmospheric boundary layer observations in the coastal urban area of Barcelona, Spain

    OpenAIRE

    Pandolfi, M.; Martucci, G.; X. Querol; Alastuey, A.; F. Wilsenack; Frey, S.; C. D. O'Dowd; Dall'Osto, M.

    2013-01-01

    Continuous measurements of Surface Mixed Layer (SML), Decoupled Residual/Convective Layer (DRCL) and aerosol backscatter coefficient were performed within the Barcelona (NE Spain) boundary layer from September to October 2010 (30 days) in the framework of the SAPUSS (Solving Aerosol Problems Using Synergistic Strategies) field campaign. Two near-infrared ceilometers (Jenoptik CHM15K) vertically and horizontally-probing (only vertical profiles are discussed) were deployed during SAPUSS and ...

  7. Continuous atmospheric boundary layer observations in the coastal urban area of Barcelona during SAPUSS

    OpenAIRE

    Pandolfi, M.; Martucci, G.; X. Querol; Alastuey, A.; F. Wilsenack; Frey, S.; C. D. O'Dowd; Dall'Osto, M.

    2013-01-01

    Continuous measurements of surface mixed layer (SML), decoupled residual/convective layer (DRCL) and aerosol backscatter coefficient were performed within the Barcelona (Spain) boundary layer from September to October 2010 (30 days) in the framework of the SAPUSS (Solving Aerosol Problems by Using Synergistic Strategies) field campaign. Two near-infrared ceilometers (Jenoptik CHM15K), vertically and horizontally probing (only vertical profiles are herein discussed), were deployed. Ceilometer-...

  8. El debate arquitectónico en Barcelona en las postrimerías del franquismo

    Directory of Open Access Journals (Sweden)

    Antonio Pizza

    2012-10-01

    Full Text Available El artículo analiza el debate arquitectónico desarrollado en Barcelona en los últimos años de vigencia del régimen franquista, intentando evidenciar las posiciones defendidas por los diferentes protagonistas y sus relaciones con las cuestiones afrontadas en el panorama internacional. Asimismo, se tiene en cuenta que en este contexto cualquier reivindicación cultural se convertía inevitablemente en contestación de lo existente.

  9. Reinventing the Rose of Fire: Anarchism and the Movements against Corporate Globalization in Barcelona

    Directory of Open Access Journals (Sweden)

    Jeffrey Juris

    2010-04-01

    Full Text Available Este artículo investiga las intersecciones entre la praxis del anarquismo clásico y el activismo de las organizaciones anti-globalización en Barcelona. Esto se inserta dentro de un debate favorable entre dos claves literarias, poniendo mis argumentos en contraste, todavía últimamente relacionados en diversas direcciones. Primero, en diálogo con la obra de José Álvarez-Junco sobre los “dos anarquismos” en España, me sugirió que los movimientos anti-globalización en Cataluña no sólo reflejan los principios tradicionales del anarquismo, que son claramente comunitarias.  En segundo lugar, contribuyo a las recientes discusiones en torno a los vínculos entre anarquismo y movimiento anti-globalización.Palabras clave: anarquismo, movimiento anti-globalización, Barcelona__________________________ABSTRACT:This article explores the intersections between classic anarchist praxis and contemporary anti-corporate globalization activism in Barcelona. It engages in a sympathetic debate with two key literatures, pushing my argument in contrasting, yet ultimately related directions. First, in conversation with José Alvarez-Junco’s work on the “two anarchisms” in Spain,  I suggest that anti-corporate globalization movements in Catalonia not only reflect traditional anarchist principles, these are distinctly communitarian. Second, I also contribute to recent discussions regarding the links between anarchism and anti-corporate globalization among politically engaged scholars.Keywords: anarchism, anti-globalization movement, Barcelona

  10. Employment descentralisation: polycentric compaction or sprawl? The case of the Barcelona Metropolitan Region 1986-1996

    OpenAIRE

    García López, Miquel-Àngel; Muñiz, Iván

    2005-01-01

    The Barcelona Metropolitan Region (BMR) has been repeatedly characterised as a polycentric-type urban system. The aim of this study is to corroborate this affirmation by making use of a methodology that enables the identifying of employment subcentres and valuing of the degree of polycentrism of the BMR in 1986 and 1996. The results obtained in the two years confirm the existence and extension of the polycentrism.

  11. Spores of allergenic Pleosporales in indoor and outdoor environments of Barcelona, Spain

    OpenAIRE

    Alvaro Leon Rúa-Giraldo; Idoia Postigo; Jordina Belmonte Soler

    2015-01-01

    Pleosporales are fungi widely distributed in the environment. They can behave as saprophytic or pathogens for plants and animals. Alternaria is the main allergenic fungus of this order with aerial dispersion of the conidia, is the most recognized taxon within this order and its alt a 1 allergen is highly conserved in the phylogenetically related fungi. With the aim of analyzing the aerobiological behavior of spores of Alternaria and other Pleosporales in Barcelona, Spain, we realized: 1) ...

  12. La cinematograf??a anarquista en Barcelona durante la Guerra Civil (1936-1939)

    OpenAIRE

    Mart??nez Mu??oz, Pau

    2008-01-01

    La tesi doctoral tracta sobre la producci?? cinematogr??fica realitzada pel moviment anarcosindicalista a Barcelona durant la Guerra Civil espanyola (1936-1939). Un corpus total de vuitanta tres t??tols, malgrat a l'actualitat nom??s es conserven quaranta i quatre cintes i no totes complertes.La investigaci?? est?? centrada en la recopilaci?? i catalogaci?? exhaustiva de tota la filmografia existent: reportatges de guerra, documentals de propaganda i pel??l??cules de ficci??. Se ha realitzat ...

  13. Pakistanis in Spain: a study based on the community living in the city of Barcelona

    Directory of Open Access Journals (Sweden)

    Montserrat Solé Aubia

    2005-01-01

    Full Text Available One of the characteristics of Spain becoming a country of immigration is the greater protagonism that some countries have acquired which had not traditionally been a major source of migration movements towards Spain. Such is the case of Pakistan, whose nationals living in Spain have considerably increased in recent years, mainly in the area of Barcelona. This study seeks to undertake a research line in order to get to know more deeply the reality of this community.

  14. Barcelona Traction at 40: the ICJ as an agent of legal development

    OpenAIRE

    Tams, C.; Tzanakopoulos, A.

    2010-01-01

    The article revisits the Barcelona Traction judgment of the International Court of Justice, rendered forty years ago. It evaluates the lasting influence of the Court's pronouncements on the nationality of corporations and on obligations erga omnes, and uses the case to illustrate the Court's role as an influential agent of legal development. In this respect, it identifies a number of factors that can help to explain under which circumstances judicial pronouncements are likely to shape the law.

  15. El jujutsu: un sport japonés en la Barcelona de principios del siglo XX.

    OpenAIRE

    Gutiérrez, Carlos; Villamón Herrera, Miguel

    2004-01-01

    Jujutsu, Japanese wrestling, technical predecessor of judo, was introduced in Europe in the period between the end of the 19th century and the beginning of the 20th by professional wrestlers, through exhibitions and challenges in theatre stages. The sporting society from Barcelona, at the forefront of progress, welcomed this combat system, admired in Europe and in the United States, which was enveloped with the oriental exoticism and mystery. However, although its great repercussion in Catalo...

  16. Urban aerosol size distributions over the Mediterranean city of Barcelona, NE Spain

    OpenAIRE

    Dall'Osto, M.; Beddows, D.C.S.; J. Pey; Rodriguez, S.; A. Alastuey; R. M. Harrison; X. Querol

    2012-01-01

    Differential mobility particle sizer (DMPS) aerosol concentrations (N13–800) were collected over a one-year-period (2004) at an urban background site in Barcelona, North-Eastern Spain. Quantitative contributions to particle number concentrations of the nucleation (33–38%), Aitken (39–49%) and accumulation mode (18–22%) were estimated. We examined the source and time variability of atmospheric aerosol particles by using both K-means clus...

  17. Urban aerosol size distributions over the Mediterranean city of Barcelona, NE Spain

    OpenAIRE

    Dall'Osto, M.; Beddows, D.C.S.; J. Pey; Rodriguez, S.; A. Alastuey; Harrison, Roy M; X. Querol

    2012-01-01

    Differential mobility particle sizer (DMPS) aerosol concentrations (N13-800) were collected over a one-year-period (2004) at an urban background site in Barcelona, North-Eastern Spain. Quantitative contributions to particle number concentrations of the nucleation (33–39%), Aitken (39–49%) and accumulation mode (18–22%) were estimated. We examined the source and time variability of atmospheric aerosol particles by using both K-means clustering and Positive Matrix Factori...

  18. de Barcelona: los cambios de la ciudad en la últimas tres décadas

    Directory of Open Access Journals (Sweden)

    J. A. Burriel Moreno

    2006-01-01

    Full Text Available Barcelona presenta una importante dinámica en su estructura urbana, con repercusiones en el medio ambiente. Para la gestión y la planificación a escala municipal se precisa saber cómo se estructura la ciudad y cómo cambia en el tiempo. En este trabajo se presenta el Mapa ecológico de Barcelona (MEB, que cuenta con tres ediciones y recoge casi tres décadas (1977- 2004 de cambios en la estructura de la ciudad. En él, se representan las zonas ecológicas que componen el sistema urbano, es decir, distintos tipos de zonas naturales, seminaturales, y urbanizadas. De la tercera edición, cabe destacar su alto nivel de resolución gracias a que las imágenes de base son ortofotos color con un píxel de 0.5 m, y que la leyenda jerárquica presenta, en su máximo detalle, 58 categorías. Los principales resultados de la comparación entre ediciones del MEB muestran el proceso de densificación urbana sufrido por Barcelona a costa de cultivos y solares sin edificar, agotando prácticamente el suelo libre del municipio, pero también la recuperación del bosque, y el importante aumento de zonas verdes.

  19. Safety-evaluation report related to the renewal of the operating license for the research reactor at the Iowa State University (Docket No. 50-116)

    International Nuclear Information System (INIS)

    This Safety Evaluation Report for the application filed by the Iowa State University (ISU) for a renewal of the Class 104 Operating License R-59 to continue to operate its Argonaut-type research reactor has been prepared by the Office of Nuclear Reactor Regulation of the US Nuclear Regulatory Commission. The facility is owned and operated by the Iowa State University, and is located on the ISU campus in Ames, Story County, Iowa. The staff concludes that the reactor facility can continue to be operated by ISU without endangering the health and safety of the public. The principal matters reviewed are: design, testing, and performance of the reactor components and systems; the expected consequences of credible accidents; the licensee's management organization; the method used for the control of radiological effluents; the licensee's technical specifications; financial data and information; the physical protection program; procedures for training reactor operators; and emergency plans. 11 references, 15 figures, 13 tables

  20. Status of Research Reactor Utilization in Brazil

    International Nuclear Information System (INIS)

    Brazil has four research reactors in operation: the IEA-R1, a pool type research reactor of 5 MW; the IPR-R1, a TRIGA Mark I type research reactor of 100 kW; the ARGONAUTA, an Argonaut type research reactor of 500 W; and the IPEN/MB-01 a critical facility of 100 W. Research reactor utilization has more than fifty years in Brazil. The first three reactors, constructed in the late 50's and early 60's at university campus in Sao Paulo, Belo Horizonte and Rio de Janeiro, had their utilization for training, teaching and nuclear research. The IPEN/MB-01, designed and constructed in IPEN in the late 80's, is utilized for the development and qualification of reactor physics calculation for PWR core application. The IEA-R1 has had its application and utilization increased through the years and it is presently used for radioisotope production, neutron beam application, neutrongraphy, neutron activation analysis, and limited fuel and material irradiation tests, besides the regular use for training and teaching. The low power of the reactor and the lack of hot cells for post irradiation analysis limits its technical application for the nuclear fuel industry. Brazil has two nuclear power plants in operation, one unit starting construction and four more units planned for the next two decades. Brazil has significant quantities of uranium ore and has expertise in all the fuel cycle steps, including uranium enrichment, and produces the fuel assemblies for the nuclear power plants. These industrial activities demand the need of material and fuel irradiation tests. IPEN produces radiopharmaceutical kits for the treatment of more than three million patients each year. The majority of the radiopharmaceutical kits is produced from imported radioisotopes. The increasing price and shortage of world supply of 99mTc leads also to the need of increasing the radioisotope production in Brazil. Due to these new demands, the Brazilian Nuclear Energy Commission is analyzing the costs and benefits

  1. Defuelling of the UTR-300 research reactor

    Energy Technology Data Exchange (ETDEWEB)

    Scott, R.D.; Banford, H.M.; East, B.W. [Scottish Universities Research and Reactor Centre, Glasgow (United Kingdom)

    1997-07-01

    The UTR-300 reactor at the Scottish Universities Research and Reactor Centre was based on the original Argonaut design with two aluminium core tanks set in a graphite reflector each containing six fuel elements cooled and moderated by water flowing up through the tanks in a closed primary circuit. The fuel plates in the original 13-plate elements were uranium oxide-aluminium with a 22g loading of 90% {sup 235}U. After 7 years of operation at 100 kW (10 kW average), the maximum power was increased to 300 kW (30 kW average) and, in order to maintain the operational excess reactivity, it was necessary to add another plate to each element progressively over the years until they all contained 14 plates. These extra plates were uranium metal-aluminium with 24.5 g of 90% {sup 235}U. No further modification of the elements was possible and so, with reactivity steadily decreasing, and for a variety of other reasons, a decision was taken to cease operation in September 1995. This paper describes the procedures whereby the fuel was unloaded from the core into a UNIFETCH flask equipped with a specially designed rotating gamma ray shield and then transported on two separate loads to Dounreay for reprocessing. (author)

  2. Defuelling of the UTR-300 research reactor

    Energy Technology Data Exchange (ETDEWEB)

    Scott, R.D.; Banford, H.M.; East, B.W. [Scottish Universities Research and Reactor Centre, Glasgow (United Kingdom)

    1997-07-01

    The UTR-300 reactor at the Scottish Universities Research and Reactor Centre was based on the original Argonaut design with two aluminium core tanks set in a graphite reflector each containing six fuel elements cooled and moderated by water flowing up through the tanks in a closed primary circuit. The fuel plates in the original 13-plate elements were uranium oxide-aluminium with a 22g loading of 90% {sup 235}U. After 7 years of operation at 100 kW (10 kW average), the maximum power was increased to 300 kW (30 kW average) and, in order to maintain the operational excess reactivity, it was necessary to add another plate to each element progressively over the years until they all contained 14 plates. These extra plates were uranium metal-aluminium with 24.5 g of 90% {sup 235}U. No further modification of the elements was possible and so, with reactivity steadily decreasing, and for a variety of other reasons, a decision was taken to cease operation in September 1995. This paper describes the procedures whereby the fuel was unloaded from the core into a UNIFETCH flask equipped with a specially designed rotating gamma ray shield and then transported on two separate loads to Dounreay for reprocessing. (author) 2 figs., 2 tabs., refs.

  3. Prokaryotic homologs of Argonaute proteins are predicted to function as key components of a novel system of defense against mobile genetic elements

    Directory of Open Access Journals (Sweden)

    van der Oost John

    2009-08-01

    Full Text Available Abstract Background In eukaryotes, RNA interference (RNAi is a major mechanism of defense against viruses and transposable elements as well of regulating translation of endogenous mRNAs. The RNAi systems recognize the target RNA molecules via small guide RNAs that are completely or partially complementary to a region of the target. Key components of the RNAi systems are proteins of the Argonaute-PIWI family some of which function as slicers, the nucleases that cleave the target RNA that is base-paired to a guide RNA. Numerous prokaryotes possess the CRISPR-associated system (CASS of defense against phages and plasmids that is, in part, mechanistically analogous but not homologous to eukaryotic RNAi systems. Many prokaryotes also encode homologs of Argonaute-PIWI proteins but their functions remain unknown. Results We present a detailed analysis of Argonaute-PIWI protein sequences and the genomic neighborhoods of the respective genes in prokaryotes. Whereas eukaryotic Ago/PIWI proteins always contain PAZ (oligonucleotide binding and PIWI (active or inactivated nuclease domains, the prokaryotic Argonaute homologs (pAgos fall into two major groups in which the PAZ domain is either present or absent. The monophyly of each group is supported by a phylogenetic analysis of the conserved PIWI-domains. Almost all pAgos that lack a PAZ domain appear to be inactivated, and the respective genes are associated with a variety of predicted nucleases in putative operons. An additional, uncharacterized domain that is fused to various nucleases appears to be a unique signature of operons encoding the short (lacking PAZ pAgo form. By contrast, almost all PAZ-domain containing pAgos are predicted to be active nucleases. Some proteins of this group (e.g., that from Aquifex aeolicus have been experimentally shown to possess nuclease activity, and are not typically associated with genes for other (putative nucleases. Given these observations, the apparent extensive

  4. RMB. The new Brazilian multipurpose research reactor

    International Nuclear Information System (INIS)

    Brazil has four research reactors (RR) in operation: IEA-R1, a 5 MW pool type RR; IPR-R1, a 100 kW TRIGA type RR; ARGONAUTA, a 500 W Argonaut type RR, and IPEN/MB-01, a 100 W critical facility. The first three were constructed in the 50's and 60's, for teaching, training, and nuclear research, and for many years they were the basic infrastructure for the Brazilian nuclear developing program. The last, IPEN/MB-01, is the result of a national project developed specifically for qualification of reactor physics codes. Considering the relative low power of Brazilian research reactors, with exception of IEAR1, none of the other reactors are feasible for radioisotope production, and even IEA-R1 has a limited capacity. As a consequence, since long ago, 100% of the Mo-99 needed to attend Brazilian nuclear medicine services has been imported. Because of the high dependence on external supply, the international Moly-99 supply crisis that occurred in 2008/2009 affected significantly Brazilian nuclear medicine services, and as presented in previous IAEA events, in 2010 Brazilian government formalized the decision to build a new research reactor. The new reactor named RMB (Brazilian Multipurpose Reactor) will be a 30 MW open pool type reactor, using low enriched uranium fuel. The facility will be part of a new nuclear research centre, to be built about 100 kilometres from Sao Paulo city, in the southern part of Brazil. The new nuclear research centre will have several facilities, to use thermal and cold neutron beams; to produce radioisotopes; to perform neutron activation analysis; and to perform irradiations tests of materials and fuels of interest for the Brazilian nuclear program. An additional facility will be used to store, for at least 100 years, all the fuel used in the reactor. The paper describes the main characteristics of the new centre, emphasising the research reactor and giving a brief description of the laboratories that will be constructed, It also presents the

  5. RMB. The new Brazilian multipurpose research reactor

    Energy Technology Data Exchange (ETDEWEB)

    Perrotta, Jose Augusto; Soares, Adalberto Jose [Comissao Nacional de Energia Nuclear (CNEN) (Brazil)

    2015-01-15

    Brazil has four research reactors (RR) in operation: IEA-R1, a 5 MW pool type RR; IPR-R1, a 100 kW TRIGA type RR; ARGONAUTA, a 500 W Argonaut type RR, and IPEN/MB-01, a 100 W critical facility. The first three were constructed in the 50's and 60's, for teaching, training, and nuclear research, and for many years they were the basic infrastructure for the Brazilian nuclear developing program. The last, IPEN/MB-01, is the result of a national project developed specifically for qualification of reactor physics codes. Considering the relative low power of Brazilian research reactors, with exception of IEAR1, none of the other reactors are feasible for radioisotope production, and even IEA-R1 has a limited capacity. As a consequence, since long ago, 100% of the Mo-99 needed to attend Brazilian nuclear medicine services has been imported. Because of the high dependence on external supply, the international Moly-99 supply crisis that occurred in 2008/2009 affected significantly Brazilian nuclear medicine services, and as presented in previous IAEA events, in 2010 Brazilian government formalized the decision to build a new research reactor. The new reactor named RMB (Brazilian Multipurpose Reactor) will be a 30 MW open pool type reactor, using low enriched uranium fuel. The facility will be part of a new nuclear research centre, to be built about 100 kilometres from Sao Paulo city, in the southern part of Brazil. The new nuclear research centre will have several facilities, to use thermal and cold neutron beams; to produce radioisotopes; to perform neutron activation analysis; and to perform irradiations tests of materials and fuels of interest for the Brazilian nuclear program. An additional facility will be used to store, for at least 100 years, all the fuel used in the reactor. The paper describes the main characteristics of the new centre, emphasising the research reactor and giving a brief description of the laboratories that will be constructed, It also

  6. Acidentes de trabalho em Barcelona (Espanha, no período de 1992-1993 Work accidents in Barcelona (Spain, from 1992 to 1993

    Directory of Open Access Journals (Sweden)

    Rosana F. Sampaio

    1998-08-01

    Full Text Available INTRODUÇÃO: As estatísticas dos acidentes de trabalho, como qualquer outro sistema de notificação, devem servir de base para determinar prioridades e decidir quais medidas preventivas devem ser adotadas. Neste contexto, o objetivo do estudo é aprofundar a análise dos acidentes de trabalho através da utilização de técnicas estatísticas descritivas que permitam estabelecer a relação entre o número de acidentes de trabalho ocorridos em Barcelona (Espanha e as variáveis tipo de acidente, setor econômico, tamanho da empresa e tipo de contrato. MÉTODO: Como fonte de dados foi utilizado o sistema de notificação de acidentes graves e mortais ocorridos na cidade de Barcelona (Espanha, entre 1992 e 1993. Foram examinados 848 registros de acidentes de trabalho em trabalhadores do sexo masculino e a partir desses dados efetuou-se uma análise mediante modelos log-lineares. RESULTADOS E CONCLUSÕES: Os resultados evidenciam que os acidentes traumáticos e o setor de construção têm uma associação positiva, verificada, da mesma forma, entre os acidentes de trânsito e o setor de serviços. Os acidentes traumáticos e de trânsito apresentaram uma associação com as pequenas empresas e os acidentes não traumáticos demonstraram associar-se com as grandes empresas. Verificou-se, ainda, associação entre os trabalhadores temporais e o setor da construção frente aos trabalhadores com contrato fixo, em que se constatou uma associação com os setores de indústria e de serviços. Foi verificada associação positiva entre os acidentes ocorridos com os trabalhadores temporais e as pequenas e médias empresas.INTRODUCTION: The statistics related to labor accidents as with any other notification system ought to be the basis for programs and policies with a view to the adoption of preventive measures. In order to establish preventive norms, however, the health system needs data from researchers focussing on the dynamics of and the pitfalls

  7. Factores relacionados con el acoso escolar (bullying en los adolescentes de Barcelona Factors related to bullying in adolescents in Barcelona (Spain

    Directory of Open Access Journals (Sweden)

    Xavier Garcia Continente

    2010-04-01

    Full Text Available Objetivos: La violencia y el acoso escolar constituyen un problema social y de salud que ha generado una gran alarma en los últimos años. En este estudio se describe el acoso escolar y los factores relacionados en estudiantes de Barcelona. Métodos: Estudio transversal de una muestra representativa de 2.727 estudiantes de 66 centros escolares de secundaria de Barcelona. Se definió «acoso escolar» como haber sido objeto de burla, golpeado o marginado cuatro o más veces, o al menos una vez en cada uno de los ítems, en los últimos 12 meses. Se realizó un análisis de regresión logística bivariado y multivariado para estudiar la relación entre el acoso y diversos factores, incluyendo variables sociodemográficas, actitudes y comportamientos. Resultados: La prevalencia de acoso escolar fue del 18,2%, 10,9% y 4,3% en chicos, y del 14,4%, 8,5% y 4,5% en chicas de 2º y 4º de educación secundaria obligatoria y 2º de bachillerato o ciclos formativos de grado medio, respectivamente. Los factores que se asociaron con un incremento de la probabilidad de padecer acoso fueron el estado de ánimo negativo y la conducta violenta, mientras que tener mayor edad, el consumo de riesgo de alcohol, el consumo de cannabis e ir a bares y discotecas se asociaron negativamente. Conclusiones: Los resultados confirman la relevancia del problema del acoso escolar en nuestro medio, y señalan diversos factores asociados, como el estado de ánimo negativo y varios comportamientos de riesgo, que deberían ser analizados con detalle en estudios longitudinales para diseñar e implementar programas preventivos apropiados.Objectives: Violence and bullying in the school setting are a serious social and health problem that have created great alarm in the last few years. We aimed to describe bullying and factors related to this phenomenon in students in the city of Barcelona. Methods: We performed a cross-sectional study of a representative sample of 2,727 students

  8. Innovar en la gestión de servicios de salud pública: la experiencia de la Agencia de Salud Pública de Barcelona Innovating the service management of public health: the experience of the Barcelona Public Health Agency (Spain)

    OpenAIRE

    Joan Guix; Joan Ramon Villalbí; Ricard Armengol; Xavier Llebaria; Rafael Manzanera; Antoni Plasència

    2008-01-01

    Se describe la evolución de la prestación de servicios de salud pública en la ciudad de Barcelona hasta la creación de la Agència de Salut Pública de Barcelona. La Agencia es un ente consorcial del Ayuntamiento de Barcelona y la Generalitat de Catalunya, como único gestor de las competencias locales y autonómicas en salud pública para la ciudad. Se analiza la lógica de su construcción, su definición de misión, visión y valores, estrategia y catálogo de servicios, así como el rol de la direcci...

  9. Capitalidad autonómica y proceso de terciarización: el caso de Barcelona

    Directory of Open Access Journals (Sweden)

    Alberich González, Joan

    2014-06-01

    Full Text Available Barcelona has been since many years ago the functional centre of a vast territory, beyond the strict scope of Catalonia. From this fact, the aim of the study is to determine whether the regional capital of Barcelona and the general process of tertiarisation, two phenomena almost contemporary, have reinforced its centrality and if they have done with greater intensity than in other cities from the Catalan urban system. In agreement with this, we have divided this work into two sections. The first one analyzes the evolution of jobs of Barcelona and the Catalan cities of over 50,000 inhabitants from the late 1980s and the first decade of the 21st century and their distribution by activity branches. The second part, as an example of this tertiarisation process, we analyze the functional change and valorisation of a Barcelona’s old obsolete industrial area for its renewal into an advanced tertiary sector use, known as district 22@.Barcelona es desde hace muchos años el centro funcional de un extenso territorio, que va más allá del ámbito estricto de Cataluña. A partir de esta realidad, el objetivo del trabajo es conocer si la capitalidad autonómica de Barcelona y el proceso general de terciarización, dos fenómenos casi contemporáneos, han reforzado su centralidad y si lo han hecho con mayor intensidad que en otras ciudades del sistema urbano catalán. De acuerdo con este planteamiento, hemos dividido este trabajo en dos apartados. El primero analiza la evolución de los puestos de trabajo y su distribución por ramas de actividad de Barcelona y las ciudades catalanas de más de 50.000 habitantes entre finales de la década de 1980 y la primera década del siglo XXI . La segunda parte, como un ejemplo de este proceso de terciarización, analiza el cambio funcional y la puesta en valor de un antiguo espacio industrial barcelonés en desuso, para su reconversión en uso del terciario avanzado, el llamado distrito 22@. [fr] Barcelone a

  10. Patrimonios incómodos para la imagen que Barcelona ofrece al mundo

    OpenAIRE

    Reventós Gil de Biedma, Ana

    2007-01-01

    Barcelona is today a city of reference within the world’s tourist map. Created as a process of both an economic evolution towards the third sector as well as a powerful brand image, from the Olympics up to nowadays. Within this scene, Culture and Arts have been pushed at the center of the strategy, building a “cultural spectacle” aimed to differentiate the city’s offer in the market. Furthermore, some specific icons oriented to give it a Catalan, Cosmopolitan and Modern identity are promoted,...

  11. Child exposure to indoor and outdoor air pollutants in schools in Barcelona, Spain.

    Science.gov (United States)

    Rivas, I; Viana, M; Moreno, T; Pandolfi, M; Amato, F; Reche, C; Bouso, L; Àlvarez-Pedrerol, M; Alastuey, A; Sunyer, J; Querol, X

    2014-08-01

    Proximity to road traffic involves higher health risks because of atmospheric pollutants. In addition to outdoor air, indoor air quality contributes to overall exposure. In the framework of the BREATHE study, indoor and outdoor air pollution was assessed in 39 schools in Barcelona. The study quantifies indoor and outdoor air quality during school hours of the BREATHE schools. High levels of fine particles (PM2.5), nitrogen dioxide (NO2), equivalent black carbon (EBC), ultrafine particle (UFP) number concentration and road traffic related trace metals were detected in school playgrounds and indoor environments. PM2.5 almost doubled (factor of 1.7) the usual urban background (UB) levels reported for Barcelona owing to high school-sourced PM2.5 contributions: [1] an indoor-generated source characterised mainly by organic carbon (OC) from organic textile fibres, cooking and other organic emissions, and by calcium and strontium (chalk dust) and; [2] mineral elements from sand-filled playgrounds, detected both indoors and outdoors. The levels of mineral elements are unusually high in PM2.5 because of the breakdown of mineral particles during playground activities. Moreover, anthropogenic PM components (such as OC and arsenic) are dry/wet deposited in this mineral matter. Therefore, PM2.5 cannot be considered a good tracer of traffic emissions in schools despite being influenced by them. On the other hand, outdoor NO2, EBC, UFP, and antimony appear to be good indicators of traffic emissions. The concentrations of NO2 are 1.2 times higher at schools than UB, suggesting the proximity of some schools to road traffic. Indoor levels of these traffic-sourced pollutants are very similar to those detected outdoors, indicating easy penetration of atmospheric pollutants. Spatial variation shows higher levels of EBC, NO2, UFP and, partially, PM2.5 in schools in the centre than in the outskirts of Barcelona, highlighting the influence of traffic emissions. Mean child exposure to

  12. An evaluation of monk parakeet damage to crops in the metropolitan area of Barcelona

    OpenAIRE

    Senar, J. C.; Domènech, J.; L. Arroyo; Torre, I.; Gordo, O.

    2016-01-01

    We evaluated damage to commercial crops caused by the monk parakeet, Myiopsitta monachus, in the Baix Llobregat agricultural area (1,024 ha) bordering the city of Barcelona, Spain. Average crop loss was 0.4% for tomatoes, 28% for corn, 9% for red plums, 36% for round plums, 37% for pears, 17% for persimmons, and 7% for quinces. Our data show that the potential damage to crops by monk parakeets in this invaded area is now a reality. As a wait–and–see approach is likely to be a more costly stra...

  13. Implementació d'un tauler de dades web de la Ciutat de Barcelona

    OpenAIRE

    Dolz Fernández, Jose Luis

    2016-01-01

    En aquesta memòria es descriu la implementació d'un tauler de dades com una aplicació web amb informació sobre la ciutat de Barcelona. L'objectiu és aconseguir una eina amb una interfície gràfica agradable, senzilla i intuïtiva que pugui fer servir un ventall ampli d'usuaris. Per portar a terme aquest projecte s'ha fet servir el repositori obert de dades que l'ajuntament de la ciutat. Per tant, s'ha estudiat el format de les dades, els seus atributs i les seves relacions abans de seleccionar ...

  14. Población femenina de nacionalidad extranjera en la provincia de Barcelona, 1996

    OpenAIRE

    Domingo i Valls, Andreu; Brancós Coll, Inés

    2000-01-01

    Los datos que nos aporta la Estadística de Población anexa al Padrón de 1996 nos han permitido realizar una primera aproximación al perfil de la población femenina de nacionalidad extranjera residente en la provincia de Barcelona. Cuando nos referimos a este colectivo, parece que exista un estereotipo donde se refleja la imagen de una mujer dominicana o filipina. Las estadísticas, sin embargo, no se corresponden con nuestro prejuicio, ya que nos confirman que la nacionalidad con un mayor núme...

  15. L’Orquestra de Cambra d’Acordions de Barcelona (OCAB): Estudio histórico

    OpenAIRE

    Tapia Paredes, Susana

    2012-01-01

    [spa] La intención de este trabajo de investigación es estudiar la trayectoria de la Orquestra de Cambra d’Acordions de Barcelona (OCAB). Se trata de una investigación descriptiva de la realidad, y por tanto trabaja sin hipótesis que verificar o rechazar, siendo, la recopilación, clasificación y análisis de la información obtenida quien nos llevará a descubrir, reconstruir y describir la trayectoria de la OCAB. Es una investigación de enfoque cualitativo, pura, descriptiva e histórica; por lo...

  16. Two simultaneous botulism outbreaks in Barcelona: Clostridium baratii and Clostridium botulinum.

    Science.gov (United States)

    Lafuente, S; Nolla, J; Valdezate, S; Tortajada, C; Vargas-Leguas, H; Parron, I; Sáez-Nieto, J A; Portaña, S; Carrasco, G; Moguel, E; Sabate, S; Argelich, R; Caylà, J A

    2013-09-01

    Botulism is a severe neuroparalytic disorder that can be potentially life-threatening. In Barcelona, Spain, no outbreaks had been reported in the past 25 years. However, in September 2011, two outbreaks occurred involving two different families. A rare case of Clostridium baratii which produced a neurotoxin F outbreak was detected in five family members who had shared lunch, and several days before that another family was affected by C. botulinum toxin A which was probably present in homemade pâté. PMID:23158693

  17. Jóvenes Latinos en Barcelona. Un relato desde el espacio escolar.

    OpenAIRE

    Palou Diez, Montse

    2007-01-01

    La investigación Espacio público y nuevas formas de sociabilidad. Jóvenes de origen latinoamericano en Barcelona (2005), dirigida por el antropólogo Carles Feixa realizada con el acompañamiento de un equipo de trabajo multidisciplinar, en el cual participe supuso un ejercicio de antropología implicada en la línea abierta por el Dr. Oriol Romaní, será el fundamento de esta reflexión desde el ámbito educativo. Apartir de ella nos adentraremos en una lectura posible de los procesos migratorios d...

  18. Las limitaciones del «modelo Barcelona». Una lectura desde Urban Regime Analysis

    OpenAIRE

    Casellas, Antònia

    2006-01-01

    El artículo explora el modelo de desarrollo urbano en Barcelona, utilizando Urban Regime Analysis como herramienta analítica. Se presentan las principales características de gobernabilidad de la ciudad y su evolución desde principios de la década de 1980 hasta el año 2006. Se analiza la dinámica de la transformación de la ciudad estudiando con detalle el proceso de consolidación de la colaboración entre los sectores público y privado iniciada en el contexto de los Juegos Olímpicos de 1992. Se...

  19. Bailando la diferencia : identidades culturales y música salsa en Barcelona

    OpenAIRE

    Llano Camacho, Isabel

    2015-01-01

    En el baile de la salsa hay muchos estilos. En Barcelona, el estilo cubano fue el primero en difundirse a inicios de 1990. Sin embargo, el estilo Los Ángeles comenzó a proliferar desde comienzos de 2000, a la vez que empezó a replicarse el modelo de los congresos de salsa a nivel mundial. La internacionalización del baile de la salsa coincidió con el boom de la inmigración latinoamericana en España, por lo que la emergencia de las primeras escuelas y compañías de baile de salsa dirigidas al p...

  20. Entrepreneurship and business survival in times of crisis: the case of Barcelona

    OpenAIRE

    Marian Buil Fabregá; Alfredo Rocafort Nicolau

    2016-01-01

    Objeto: El trabajo que se presenta en este artículo es la primera parte de un estudio sobre las estrategias llevadas a cabo por las empresas en épocas de crisis. Este primer artículo analiza las características financieras de las empresas creadas en Barcelona en los inicios de la crisis y que han sobrevivido durante la misma. Este estudio pretende contrastar las características financieras de las empresas analizadas con las medidas llevadas a cabo para mantener su rentabilidad ...

  1. Urbanització i planejament urbanístic: Barcelona, 1917-1936

    OpenAIRE

    Llobet i Llobet, Jaume

    1984-01-01

    El núcleo fundamental del trabajo es el análisis conjunto de las transformaciones en las formas de construcción urbana y el planeamiento urbanístico en un periodo histórico, significativo en tanto que relaciona la ciudad y la urbanística de principios de siglo XX con el arranque de la disciplina y la Barcelona modernas. El estudio de la urbanización -centrado en el ensanche y el extrarradio, como los espacios donde se reflejan mejor las características y tensiones en el crecimiento urbano de...

  2. Atraque discontinuo Nº2 en la explanada de inflamables del puerto de Barcelona

    OpenAIRE

    Peñín Martínez, David

    2013-01-01

    A lo largo de la historia, el Puerto de Barcelona ha seguido el mismo modelo en el crecimiento de sus infraestructuras, consistente en un incremento de la superficie portuaria mediante la formación de terminales portuarias en zonas de aguas abrigadas siendo éstas generadas mediante el desarrollo de grandes diques a lo largo de la costa. Las obras del presente proyecto tienen como fin la creación de la infraestructura necesaria para poder ubicar un nuevo atraque para buques que transporten...

  3. Paul Ludwing Landsberg, a Knight Errant of the Spirit in Barcelona

    OpenAIRE

    Escribano, Xavier

    2015-01-01

    Paul Ludwig Landsberg (Bonn, 1901-Oranienburg, 1944) was a prominent student of the German philosopher Max Scheler. Born into a Jewish family, Landsberg was a professor at the University of Bonn until 1933, when he left his country at the time of Hitler’s rise to power. In spring 1934, Joaquim Xirau, dean of the Faculty of Philosophy and Letters of the University of Barcelona, invited him to give lectures and teach classes in the Seminar on Education. During the academic years 1934-35 and 193...

  4. A doble página: prensa y arquitectura en la Barcelona Olímpica

    OpenAIRE

    Vásquez Vargas, Klever Francisco

    2015-01-01

    Luego de seleccionar y clasificar artículos de la prensa relacionados con la arquitectura de Barcelona en el periodo previo a las olimpiadas del ‘92, se formaron cuatro grupos temáticos de condición doble, son parejas que comparten características que las vuelven complementarias o contrarias: Bofill y Bohigas. Capítulo que trata sobre dos de los personajes más activos de aquel periodo. Se revelan aspectos que confirman la relación oscilante entre la crítica meditada y opinión enardecida qu...

  5. Implementación sistema A-SMGCS en el aeropuerto de Barcelona

    OpenAIRE

    González Gómez, Albert

    2013-01-01

    An airport goes beyond that a simple traffic of passengers. An airport means the economic engine of one community, a city or the country that it is located, so that the engineers always have to be aware of the latest available technologies to keep them at the forefront. In order that the Barcelona's Airport can continue to race with other major airports as "Heathrow Airport" or "Dubai Airport", not is enough to build new terminals, but they should also be provide them with the latest technolo...

  6. PCB residues in the adipose tissue of the population of Barcelona (Spain)

    Energy Technology Data Exchange (ETDEWEB)

    Gomez-Catalan, J.; Sabroso, M.; To-Figueras, J.; Planas, J.; Corbella, J. (Univ. of Barcelona (Spain))

    1991-10-01

    Polychlorinated biphenyls (PCBs) are a class of aryl halides widely distributed in the environment. Although production has virtually ceased, and most industrial applications (capacitors, transformers, hydraulic fluids, lubricants, etc) are severely restricted, they are one of the most ubiquitous and persistent environmental pollutants. Several toxic effects caused by PCBs have been described including: liver enlargement, hepatomegalocytosis, acne, lymphoid atrophy, immunosuppression, tumor promotion, porphyria. This work continues the authors' previous reports about organochlorine residues in human tissues of some Spanish populations, that showed high levels of some residues, specially of hexachlorobenzene (HCB). PCBs pattern and concentration in the adipose tissue of the inhabitants of an urban and industrial area (Barcelona) were determined.

  7. Activity size distributions for long-lived radon decay products in aerosols collected in Barcelona (Spain)

    International Nuclear Information System (INIS)

    The activity median aerodynamic diameters (AMADs) of long-lived radon decay product (210Pb, 210Po) in aerosols collected in the Barcelona area (Northeast Spain) during the period from April 2006 to February 2008 are presented. The 210Po mean AMAD was 420 nm, while the 210Pb mean AMAD was 500 nm. The temporal evolution of 210Pb and 210Po AMADs shows maxima in autumn and winter and minima in spring and summer. 210Pb AMAD are being used to estimate the mean-residence time of atmospheric aerosols.

  8. Turisme i arquitectura en la Barcelona d'inicis del segle XX

    OpenAIRE

    Rosselló i Nicolau, Maribel; Valdivia Pardo, Pamela

    2009-01-01

    La comunicació que proposem estudia els diversos equipaments hotelers que es van posar en marxa en el període comprès entre les dues exposicions universals/internacionals (1888 i 1929). A inicis del segle XX, el turisme va jugar un paper fonamental com a motor de modernització de la ciutat de Barcelona, va ser un dels mecanismes per a fer de la ciutat una metròpoli i fou un argument –entre d’altres– per a revalorar el patrimoni arquitectònic de la ciutat, per endegar algunes trans...

  9. La cinematografía anarquista en Barcelona durante la Guerra Civil (1936-1939)

    OpenAIRE

    Martínez Muñoz, Pau

    2008-01-01

    La tesi doctoral tracta sobre la producció cinematogràfica realitzada pel moviment anarcosindicalista a Barcelona durant la Guerra Civil espanyola (1936-1939). Un corpus total de vuitanta tres títols, malgrat a l'actualitat només es conserven quaranta i quatre cintes i no totes complertes.La investigació està centrada en la recopilació i catalogació exhaustiva de tota la filmografia existent: reportatges de guerra, documentals de propaganda i pel·lícules de ficció. Se ha realitzat l'anàlisi d...

  10. Food and Migration: the Abacería Central Market of Gràcia (Barcelona)

    OpenAIRE

    Medina, F. Xavier; Provansal, Danielle; Montero, Cecilia

    2010-01-01

    Local food markets are, aside from being places for provisioning, spaces for meeting and social interaction. This article engages in an analysis of the social and commercial relations exhibited in the geographical area of the Abacería Central Market, in the neighborhood of Gràcia (Barcelona): a neighborhood that, over the last two decades, has seen a significant rise in the number of residents arriving from other countries (primarily Latin America, Africa and Eastern Europe). The Abacería Cen...

  11. Estrategia de expansión de la marca myhair Barcelona en Madrid

    OpenAIRE

    Tordera Rodríguez, Silvia

    2015-01-01

    El presente documento corresponde a la memoria de un proyecto final de carrera realizado en la empresa Sangrá Hair International perteneciente al sector de la distribución de productos de peluquería, concretamente extensiones de cabello, pelucas y postizos. Sangrá tiene 2 líneas de negocio: la distribución de sus productos a nivel nacional e internacional (B2B), y la segunda objeto de este proyecto es bajo la marca myhair Barcelona y se dedica a franquiciar su negocio a través de franqu...

  12. La Unidad de Terapia de Conducta de la Universidad de Barcelona

    OpenAIRE

    Saldaña García, Carmina; Bados López, Arturo; García-Grau, Eugeni; Balaguer, Gemma; Fusté-Escolano, Adela

    2009-01-01

    El trabajo presenta la Unidad de Terapia de Conducta (UTC) de la Universidad de Barcelona. La UTC nació en 1985 con la voluntad de formar a los psicólogos recién licenciados en la práctica profesional desde el modelo cognitivoconductual y crear un Servicio Clínico en la Facultad de Psicología que permitiera una mejora de la calidad de las actividades docentes e investigadoras a través de la asistencia psicológica a personas de dentro y fuera de la UB que así lo solicitaran. En el trabajo se d...

  13. La satisfacción de los clientes de los centros deportivos municipales de Barcelona

    OpenAIRE

    Amal Elasri Ejjaberi; Triadó Ivern, Xavier M.; Pilar Aparicio Chueca

    2015-01-01

    El objetivo de este trabajo es identificar y analizar las variables que más influyen en la satisfacción del cliente en los centros deportivos de Barcelona. Los datos fueron recogidos en una encuesta entre los clientes actuales de centros deportivos municipales. Un análisis factorial aplicado a esta información revela cinco dimensiones que subyacen a los múltiples componentes de la oferta de servicios en dichas instalaciones: su calidad, los recursos humanos, la comunicación, el entorno social...

  14. Análisis de la comunicación intercultural sobre la inmigración china en Barcelona

    OpenAIRE

    Huang, Xueting

    2015-01-01

    Análisis la comunicación intercultural de la migración china en Barcelona, construyendo un soporte teórico entre la migración y la comunicación. Se investigan las características de comunicación a través de las teorías. En el trabajo se presentarán principalmente cuatros aspectos para investigar el fenómeno social de que los chinos que emigran a Barcelona. En primer lugar, se lleva a cabo un análisis de la asimetría y el cambio sobre el intercambio cultural entre China y Barcelona. En segundo...

  15. N Reactor

    Data.gov (United States)

    Federal Laboratory Consortium — The last of Hanfordqaodmasdkwaspemas7ajkqlsmdqpakldnzsdflss nine plutonium production reactors to be built was the N Reactor.This reactor was called a dual purpose...

  16. Análisis de la prestación de servicios a inmigrantes en la red Bibliotecas de Barcelona

    Directory of Open Access Journals (Sweden)

    Cervantes-Martínez, Luisa

    2015-09-01

    Full Text Available The aim of this paper is to analyze the quality of library service provision to immigrants in the Bibliotecas de Barcelona network using as a reference IFLA’s Multicultural Communities: Guidelines for Library Services. By adopting these guidelines, public libraries can become environments capable of facilitating social cohesion, knowledge and cultural exchange, as well as interaction between users from different cultures. To carry out this study, several information sources were reviewed and two library managers from the Barcelona Library Consortium were interviewed. The results show a high level of compliance with the Guidelines by the Bibliotecas de Barcelona network. The possible implications of these results are discussed in relation to the role of public libraries as spaces of interaction and cultural exchange.El objetivo de este artículo es analizar la calidad de la prestación de servicios bibliotecarios a inmigrantes en la red Bibliotecas de Barcelona utilizando como referencia el documento Comunidades Multiculturales: Directrices para el Servicio Bibliotecario, elaborado por la International Federation of Library Associations and Institutions (IFLA. La adopción de estas Directrices convierte a las bibliotecas públicas en entornos que pueden facilitar la cohesión social, el conocimiento e intercambio cultural y la interacción entre usuarios de distintas culturas. Para llevar a cabo este estudio se han revisado distintas fuentes de información y se ha entrevistado a dos responsables del Consorcio de Bibliotecas de Barcelona. Los resultados obtenidos evidencian la existencia de un alto nivel de cumplimiento de las Directrices en la red Bibliotecas de Barcelona. Se discuten las posibles implicaciones de estos resultados en relación con el papel de las bibliotecas públicas como espacios de interacción e intercambio cultural.

  17. Els usos lingüístics dels nens japonesos i nipocatalans/nipocastellans escolaritzats a Catalunya. El cas dels alumnes del Col·legi Japonès de Barcelona i de l'Escola Complementària de Llengua Japonesa de Barcelona

    OpenAIRE

    Fukuda, Makiko

    2009-01-01

    The paper presents patterns of language use of the schoolchildren who attend one of the two japanese educational establishments in Barcelona: the Japanese School of Barcelona and the Supplementary Japanese School of Barcelona. Based on the data from a small-scale pilot study, patterns of language use of the children in the communication with their parents, their siblings, and their friends are analyzed. Their language preference in the communication media are also presented. The language use ...

  18. The challenge of improving urban air quality: effects of hybrid cars, introduction in Barcelona and Madrid (Spain)

    OpenAIRE

    Gonçalves Ageitos, María; Jiménez Guerrero, Pedro; Baldasano Recio, José María

    2011-01-01

    WRF-ARW/HERMES/CMAQ modelling system is applied with high resolution (1 km2, 1 h) to assess changes in Madrid and Barcelona (Spain) air quality due to hybrid cars introduction. The substitution of the oldest cars by hybrids is effective to reduce NO2 and PM2.5 levels in the conurbations (up to 35%/12% in Madrid downtown, when 30% of cars are changed). In VOC-limited areas, as Barcelona, the NOx emissions abatement locally increases tropospheric ozone concentration. Downwind,...

  19. Los planes de seguimiento en los parques naturales gestionados por la Diputación de Barcelona

    OpenAIRE

    Bombí Arnau, Antoni; Castell Puig, Carles; Guinart Sureda, Daniel; Llacuna Claramunt, Santiago; Miño Salinas, Àngel

    2002-01-01

    El Área de Espacios Naturales de la Diputación de Barcelona gestiona una docena de este tipo de espacios ubicados en el entorno de la región metropolitana de Barcelona, con una superficie protegida de más de cien mil hectáreas. Es necesario un exhaustivo conocimiento de los principales componentes de los sistemas naturales, así como de los procesos y dinámicas que están siguiendo, para poder evaluar adecuadamente la planificación y la gestión de acuerdo con los objetivos de conservac...

  20. El Barrio Gótico de Barcelona. Planificación del pasado e imagen de marca

    OpenAIRE

    Cócola Gant, Agustin

    2010-01-01

    El Barrio Gótico de Barcelona fue construido en las décadas centrales del siglo XX. De hecho, su nombre también es una creación moderna, ya que tradicionalmente el espacio era conocido como barrio de la Catedral. Aunque en teoría los monumentos históricos nos remiten a épocas pasadas, en muchos casos han sido fabricados recientemente, tanto en su forma como en su función social. La medievalización del centro histórico de Barcelona transformó físicamente el barrio institucional de la ciudad, d...

  1. Operational experience of decommissioning techniques for research reactors in the United Kingdom

    International Nuclear Information System (INIS)

    In previous co-ordinated research projects (CRP) conducted by the IAEA no distinction was made between decommissioning activities carried out at nuclear power plants, research reactors or nuclear fuel cycle facilities. As experience was gained and technology advanced it became clear that decommissioning of research reactors had certain specific characteristics which needed a dedicated approach. It was within this context that a CRP on Decommissioning Techniques for Research Reactors was launched and conducted by the IAEA from 1997 to 2001. This paper considers the experience gained from the decommissioning of two research reactors during the course of the CRP namely: (a) the ICI Triga Mk I reactor at Billingham UK which was largely complete by the end of the research project and (b) the Argonaut 100 reactor at the Scottish Universities Research and Reactor centre at East Kilbride in Scotland which is currently is the early stages of dismantling/site operations. It is the intention of this paper with reference to the two case studies outlined above to compare the actual implementation of these works against the original proposals and identify areas that were found to be problematical and/or identify any lessons learnt. (author)

  2. Quantification of thermal bioclimate for the management of urban design in Mediterranean climate of Barcelona, Spain

    Science.gov (United States)

    Rodríguez Algeciras, José Abel; Matzarakis, Andreas

    2016-08-01

    In order to contribute to the sustainability of the outdoor environment, knowledge about the urban thermal bioclimate should be transferred into climatic guidelines for planning. The general framework of this study responds to the need of analyzing thermal bioclimate in Mediterranean climate regions and its influence as an urban design factor. The paper analyzes the background of the urban climate and thermal bioclimate conditions in Barcelona (Spain), through the effect of shade conditions and wind speed variations. Simulations of shade and wind speed variations were performed to evaluate changes in thermal bioclimate due to modifications in urban morphology. Air temperature, relative humidity, wind speed, and solar radiation for the period from January, 2001 to January, 2015 were used to calculate physiologically equivalent temperature (PET) using the RayMan model. The results demonstrate that shade is the most important strategy to improve urban microclimatic conditions. In Barcelona, human thermal comfort conditions can be improved by shade and wind speed increase in terms of PET above 23 °C and by a wind speed decrease for thresholds of PET below 18 °C. Heat stress situations can be mitigated by shade and wind speed increase in conditions above 35 and 45 °C, respectively. The results of the study are an important contribution for urban planners, due to their possibilities and potential for the description of microclimatic conditions in Mediterranean climate regions. The knowledge is useful for improved human thermal comfort conditions, from the suitable configuration of urban form and architecture.

  3. Service-Learning in Physical Education Teacher Training. Physical Education in the Modelo Prison, Barcelona

    Directory of Open Access Journals (Sweden)

    Teresa Lleixà

    2015-06-01

    Full Text Available In the Psychiatric Unit of the Modelo Prison, Barcelona, a physical education programme is carried out annually with the participation of University of Barcelona (UB students. In this context, we carried out a study based on service-learning parameters. The aim of the study was twofold: to determine the impact on inmates of the physical education programme that was undertaken with university students; and to assess what university students’ learnt in the prison-based socio-educational intervention programme. This paper describes the context of the research and the methodological basis of service learning. The qualitative tools to gather the information were: two focus group; a semi-structured interview with a representative of the unit’s guards; and the students’ field dairy. We present results that demonstrate the impact of the physical, sports activity on the socialisation of inmates, in terms of aspects such as communication and personal skills. The results also show the effect of the programme on the university students’ learning processes, particularly with regard to the contextualisation of learning.

  4. Modeling of photochemical air pollution in the Barcelona area with highly disaggregated anthropogenic and biogenic emissions

    International Nuclear Information System (INIS)

    The city of Barcelona and its surrounding area, located in the western Mediterranean basin, can reach high levels of O3 in spring and summertime. To study the origin of this photochemical pollution, a numerical modeling approach was adopted and the episode that took place between 3 and 5 August 1990 was chosen. The main meteorological mesoscale flows were reproduced with the meteorological non-hydrostatic mesoscale model MEMO for 5 August 1990, when weak pressure synoptic conditions took place. The emissions inventory was calculated with the EIM-LEM model, giving highly disaggregated anthropogenic and biogenic emissions in the zone studied, an 80 x 80 km2 area around the city of Barcelona. Major sources of VOC were road traffic (51%) and vegetation (34%), while NOx were mostly emitted by road traffic (88%). However, emissions from some industrial stacks can be locally important and higher than those from road traffic. Photochemical simulation with the MARS model revealed that the combination of mesoscale wind flows and the above-mentioned local emissions is crucial in the production and transport of O3 in the area. On the other hand, the geostrophic wind also played an important role in advecting the air masses away from the places O3 had been generated. The model simulations were also evaluated by comparing meteorological measurements from nine surface stations and concentration measurements from five surface stations, and the results proved to be fairly satisfactory. (author)

  5. Richard Lindau y el museo de arte japonés de Barcelona

    Directory of Open Access Journals (Sweden)

    Bru Turull, Ricard

    2012-03-01

    Full Text Available Richard Lindau resided as a diplomat in Japan between 1866 and 1868, where he acquired in Edo (Tokyo an extensive and exceptional collection of Japanese art. After being named German consul in Barcelona (1876, Lindau offered his collection to the public by opening his residence in the centre of the city as a Japanese Museum. This paper aims to recover the history of this forgotten collection, which constituted one of the first private museums of Japanese art in Southern Europe.

    Richard Lindau residió como diplomático en Japón entre 1866 y 1868, durante los años de transición entre el shogunato Tokugawa y el nuevo sistema imperial Meiji. Lindau estuvo en el archipiélago nipón en el momento oportuno para adquirir una excepcional colección de arte japonés. Trasladado a Barcelona en 1876 como cónsul de Alemania, Lindau ofreció la colección al público abriendo su residencia y anunciándola como Museo Japonés. Este artículo recupera la historia de la colección olvidada de uno de los primeros museos privados de arte japonés del sur de Europa.

  6. Sowing Resilience and Contestation in Times of Crises: The Case of Urban Gardening Movements in Barcelona

    Directory of Open Access Journals (Sweden)

    Marta Camps-Calvet

    2015-07-01

    Full Text Available Urban gardens have been observed to multiply in response to crises. However, the meaning and motivations behind the emergence of gardening movements varies greatly over space and time. In this paper we argue that bottom up urban gardening initiatives taking place in Southern European countries in form of land occupation and communalization represent forms of resistance that enhance social cohesion and collective action in times of need. Specifically, this research examines the role of urban gardens in (i building community resilience and (ii articulating forms of resistance and contestation to development pressure and commodified urban lifestyles. Our research is based on data collected among 27 urban gardening initiatives in Barcelona, Spain, including 13 self-governed community gardens and 14 public gardens. Data were collected from semi-structured interviews with gardeners and with staff from the Barcelona City Council. Our results show mechanisms through which urban gardens can contribute to build resilience by nurturing social and ecological diversity, generating and transmitting local ecological knowledge, and by creating opportunities for collective action and self-organization. We further examine collectively managed gardens as urban commons that emerge as a form of resistance to the privatization of public urban space, and that offer opportunities to experiment with new models of urban lifestyles. We show how gardening initiatives can be seen to represent an emerging form of urban green commons that provides a suitable ground to ‘sow’ resilience and contestation in times of crises and socio-ecological deterioration.

  7. Cerdà and Barcelona: The need for a new city and service provision

    Directory of Open Access Journals (Sweden)

    Montserrat Pallares Barbera

    2011-01-01

    Full Text Available This paper examines Ildefons Cerdà’s 1860 Plan for the Urban Expansion of Barcelona; specifically, how and why it was conceived in a unique way, in which the provision of services to the population was an important part. Cerdà based his expansion proposal on an in depth socio statistical study of old Barcelona’s population conditions. The high mortality rates of the working class population and poor health and education conditions pushed Cerdà to design a new type of urban planning, which he defined as “urbanism”. In his proposal for the new city, he planned the location of services such as marketplaces, schools and hospitals. The first part of this paper introduces the urban and political preconditions of Barcelona and the statistics on which Cerdà based his contribution. The second part uses location theory and a geographic information system (GIS to analyse the pattern of location and the population served by markets and hospitals. In addition, topographic maps from 1926 and 1975 are used to study the development of the expansion up to when it was fully developed. The evolution of the city differed from Cerdà’s proposal, partly due to unexpected increases in population density, the built environment, and higher amounts of building occupation. Nevertheless, Cerdà’s layout of streets and avenues has prevailed.

  8. Quantification of thermal bioclimate for the management of urban design in Mediterranean climate of Barcelona, Spain

    Science.gov (United States)

    Rodríguez Algeciras, José Abel; Matzarakis, Andreas

    2015-12-01

    In order to contribute to the sustainability of the outdoor environment, knowledge about the urban thermal bioclimate should be transferred into climatic guidelines for planning. The general framework of this study responds to the need of analyzing thermal bioclimate in Mediterranean climate regions and its influence as an urban design factor. The paper analyzes the background of the urban climate and thermal bioclimate conditions in Barcelona (Spain), through the effect of shade conditions and wind speed variations. Simulations of shade and wind speed variations were performed to evaluate changes in thermal bioclimate due to modifications in urban morphology. Air temperature, relative humidity, wind speed, and solar radiation for the period from January, 2001 to January, 2015 were used to calculate physiologically equivalent temperature (PET) using the RayMan model. The results demonstrate that shade is the most important strategy to improve urban microclimatic conditions. In Barcelona, human thermal comfort conditions can be improved by shade and wind speed increase in terms of PET above 23 °C and by a wind speed decrease for thresholds of PET below 18 °C. Heat stress situations can be mitigated by shade and wind speed increase in conditions above 35 and 45 °C, respectively. The results of the study are an important contribution for urban planners, due to their possibilities and potential for the description of microclimatic conditions in Mediterranean climate regions. The knowledge is useful for improved human thermal comfort conditions, from the suitable configuration of urban form and architecture.

  9. Indoor and outdoor BTX levels in Barcelona City metropolitan area and Catalan rural areas

    Institute of Scientific and Technical Information of China (English)

    E. Gallego; F. X. Roca; X. Guardino; M. G. Rosell

    2008-01-01

    Five aromatic hydrocarbons (benzene, toluene, and three isomeric xylenes) were monitored in indoor and outdoor air of 7 public buildings and 54 private homes, located in Barcelona City metropolitan area and in several rural areas of Catalonia. The sampling was carried out over four periods: spring-summer and winter of 2000, and summer and winter of 2001. Passive ORSA 5 Draiger samplers were used for benzene, toluene, and xylenes (BTX) adsorption. BTX were extracted with carbon disulphide and analysed using a gas chromatograph coupled to a FID detector. In Barcelona metropolitan area the outdoor average concentrations of BTX were 3.5, 34.2, and 31.3 μg/m3 in urban areas, and 1.4, 9.2, and 9.2 μg/m3 in rural areas, respectively. Average indoor air concentrations of BTX were respectively 4.3, 64.8, and 47.6 μg/m3 in urban areas and 5.8, 67.0, and 51.4 μg/m3 in rural areas, respectively. A direct connection between the house and garage was one of the most influential factors for indoor BTX concentrations in rural areas. In urban areas, diffuse traffic sources were the predominant BTX source, slightly influenced by tobacco smoke in indoor air.

  10. Energy and environmental evaluation of municipal facilities: Case study in the province of Barcelona

    International Nuclear Information System (INIS)

    The service sector is extraordinarily important for the European economy, as it accounts for 75% of the GDP. Yet it is also a huge consumer of energy, especially in urban environments. Municipalities have the authority to develop and manage municipal services, and as a result the European Commission drew up the Covenant of Mayors in which the signatory municipalities pledge to reduce their CO2 emissions by 20% of their 1990 rates. Sustainable Energy Action Plans (SEAPs) emerged from this covenant with the goal of analysing the current consumption patterns and compiling the actions that the municipalities should undertake in order to fulfil their pledges. This article focuses on analysing the energy consumption and greenhouse gas emissions of 978 municipal service facilities in the province of Barcelona in the year 2005. The average consumption per facility by surface area is 118.8 kWh/m2. Regarding greenhouse gas emissions, the average annual emissions in the facilities studied in the province of Barcelona were 40.0 kg CO2 eq/m2. - Highlights: • Energy consumption and GHG emissions of 978 municipal facilities are analysed. • The average annual energy consumption per facility is 130 MWh. • The average annual energy consumption per facility by surface area is 118.8 kWh/m2. • The average annual GHG emissions in the facilities studied are 40.0 kg CO2 eq/m2

  11. STUDY REGARDING THE MEN'S 50M FREESTYLE AT THE 2013 BARCELONA WORLD SWIMMING CHAMPIONSHIP

    Directory of Open Access Journals (Sweden)

    Galeru Ovidiu

    2014-03-01

    Full Text Available The 2013 Barcelona World Swimming Championships have confirmed once again the conclusion of various specialists and statistics that the results recorded at the World Championships following the Summer Olympic Games are more valuable from a performance standpoint. The men's 50m and 100m freestyle events attract the most attention, being considered the most disputed, being the most watched events by the specialists, by the media, and by a larger audience. The chances of each athlete aspiring to the top title are analyzed, their competition strategies, but also the statements of the most valuable swimmers. The pertinent analyses of the races, especially during the late stages of the competition, semifinals and final, represent extremely important sources of information for coaches and researchers, offering data and specific indices that can improve the athletes' future performances, or can predict certain performances. In this study I aim to analyze the men's 50m freestyle final at the 2013 Barcelona World Swimming Championships, and to compare the results with the ones recorded by the athlete I am currently coaching, the Romanian swimmer Norbert Trandafir, an athlete who was qualified in the semifinals for this event, but came out in 13th position in the final, with a new national record (21.98 s, a time that can mean a qualification in the European, World, and why not, even Olympics finals.

  12. Gobernanza Urbana y Participación Comunitaria. Los Casos de Barcelona, Bilbao y Pamplona (Urban Governance and Community Involvement. Cases of Barcelona, Bilbao and Pamplona

    Directory of Open Access Journals (Sweden)

    Imanol Telleria

    2015-12-01

    Full Text Available This article is based on a detailed study of three cases (Barcelona, ​​Pamplona and Bilbao trying to address from a theoretical perspective a more current characterization of urban movements, joining in a framework of analysis the contributions of the American and European schools study of social movements. To do this, we present the results of empirical research conducted in the districts of the three cities and perform a comparison of the most important variables. This research shows that urban movements have become increasing their ability to access aided by the opening of opportunities on local governance (EOP and have driven participatory processes articulated from a communitarian methodology (repertoires, intended to promote democratic management of the city (speech from reticular logic (organization oriented at re-structuring of society, as a prelude to increasing its influence on urban policies. Este artículo se basa en un estudio en profundidad de tres casos (Barcelona, Pamplona y Bilbao tratando de abordar desde una perspectiva teórica una caracterización más actual de los movimientos urbanos, aunando en un marco de análisis los aportes de las escuelas americana y europea de estudio de los movimientos sociales. Para ello, presentamos los resultados de la investigación empírica realizada en los barrios de las tres ciudades y realizamos una comparativa de las variables más importantes. Este estudio demuestra que los movimientos urbanos se han transformado aumentando su capacidad de acceso ayudados por  la apertura de oportunidades provocada por la gobernanza local (EOP y han impulsado procesos participativos que, articulados desde la metodología comunitaria (repertorios, pretenden provocar un impulso de la gestión democrática de la ciudad (discurso a partir de lógicas reticulares (organización orientadas a la re-vertebración de la sociedad, como paso previo al aumento de su  influencia sobre las políticas urbanas

  13. Regulating the Writing Process in the Teacher Training Practicum Guided by Feedback at the University of Barcelona

    Science.gov (United States)

    Vidiella, Maria-Cinta Portillo; Garcia, Elena Cano

    2016-01-01

    This is a longitudinal study that focuses on blog-writing for the purpose of self-assessing competencies, and which was carried out within the practicum of a degree course in Primary Education Teaching at the University of Barcelona. Over the course of three academic years, students and a teacher have used a Platform 2.0 program, specially created…

  14. Ensenyar la ciutat o aprendre de la ciutat : l'exemple de Barcelona

    Directory of Open Access Journals (Sweden)

    Mercè Tatjer

    2002-01-01

    Full Text Available L’article mostra, a través de l’exemple de Barcelona, com la ciutat s’ha anat consolidant en el decurs del segle XX com un instrument bàsic per a l’aprenentatge de les ciències socials en els diferents nivells educatius. En aquest sentit destaca —després d’un breu anàlisi dels precedents històrics en l’ensenyament de la ciutat— les primeres experiències didàctiques desenvolupades en la dècada de 1930 amb els importants moviments de renovació pedagògica. També s’estudien els factors específics que, en el cas barceloní, han possibilitat en els darrers vint-i-cinc anys l’eclosió de materials didàctics sobre la ciutat, com ara l’important protagonisme del professorat en coincidència amb els nous plantejaments de les disciplines referents, el despertar d’una consciència ciutadana, el suport dels professionals dedicats a la ciutat i les iniciatives desenvolupades per l’Ajuntament de Barcelona. D’ara endavant s’obre el nou repte d’inserir amb més claredat aquesta eina educativa que és la ciutat en el currículum escolar, a partir del suport de les noves tecnologies i amb estreta connexió amb les disciplines referents com la Geografia, la Història i la resta de Ciències Socials.Using Barcelona as an example, this article shows how, throughout the twentieth, century cities have become a basic tool in the learning process of social sciences at all education levels. In this sense, —after a brief analysis of teaching historical precedents in this city— the first didactical experiences developed in the 1930s, in which the movement of pedagogical renovation took place, stand out. Besides, the authors also analyze the specific factors that, in the case of Barcelona, have permitted the appearance of didactical material about the city during the last 25 years, such as the important role of teaching staff in relation to the new approaches of the referent areas, the wakening of a citizen conscience, the

  15. Implementation of CGPS at Estartit, Ibiza and Barcelona harbours for sea level monitoring

    Science.gov (United States)

    Martinez-Benjamin, J. J.; Ortiz Castellon, M.; Martinez-Garcia, M.; Perez, B.; Bosch, E.; Termens, A.; Martinez de Oses, X.

    2009-12-01

    The determination of global and regional mean sea level variations with accura-cies better than 1 mm/yr is a critical problem, the resolution of which is central to the current debate on climate change and its impact on the environment. Highly accurate time series from both satellite altimetry and tide gauges are needed. Measuring the sea surface height with in-situ tide gauges and GPS receivers pro-vides an efficient way to control the long term stability of the radar altimeters and other applications as the vertical land motion and studies of sea level change. L’Estartit tide gauge is a classical floating tide gauge set up in l’Estartit harbour (NE Spain) in 1990. Data are taken in graphics registers from which each two hours the mean value is recorded in an electronic support and delivered to the Permanent Service for Mean Sea level (PSMSL). Periodic surveying campaigns along the year are carried out for monitoring possible vertical movement of the geodetic benchmark adjacent to the tide gauge. Puertos del Estado (Spanish Harbours) installed the tide gauge station at Ibiza har-bour in January 2003 and a near GPS reference station. The station belongs to the REDMAR network, composed at this moment by 21 stations distributed along the whole Spanish waters, including also the Canary islands (http://www.puertos.es). The tide gauge also belongs to the ESEAS (European Sea Level) network. A description of the actual infrastructure at Ibiza, Barcelona and l’Estartit har-bours is presented.The main objective is the implementation of these harbours as a precise geodetic areas for sea level monitoring and altimeter calibration. Actually is a CGPS with a radar tide gauge from Puertos del Estado and a GPS belonging to Puerto de Barcelona. A precise levelling has been made by the Cartographic Insti-tute of Catalonia, ICC. The instrumentation of sea level measurements has been improved by providing the Barcelona site with a radar tide gauge Datamar 3000C device and a

  16. A management system for accidental water pollution risk in a harbour: The Barcelona case study

    Science.gov (United States)

    Grifoll, Manel; Jordà, Gabriel; Espino, Manuel; Romo, Javier; García-Sotillo, Marcos

    2011-10-01

    Water quality degradation in harbour domains can have an important negative impact from an economic, touristic and environmental point of view. In that sense, water quality management is becoming a main concern for harbour managers. In this paper, we present the research behind the initiative started in Spanish harbours to control water quality degradation due to accidental pollution. This management system is already operationally running in the Barcelona harbour (NW Mediterranean Sea). The system is based on a recent published risk assessment, which takes into account not only the different activities in the harbour and their inherent risk of accident but also the physical behaviour of harbour waters. In this methodology, a key element is to get hydrodynamic forecasts. Thus, the system is composed of a hierarchy of nested hydrodynamic models covering from the basin scale to the harbour scale and a module that computes the different parameters needed for risk assessment. Special emphasis is made on describing the steps followed for system implementation because such implementation is far from a mere technical problem. The first step is to identify the main forcing factors for the harbour hydrodynamics from both field data and numerical experiments, which has never been done before for the Barcelona harbour. Wind and shelf currents are suggested as the main forcing factors for the harbour circulation. The second step is to identify the requirements that a numerical model must fulfil in order to properly solve the Barcelona harbour's hydrodynamics. A high resolution (< 50 m) three dimensional model able to prognostically calculate temperature and salinity evolution; full air-sea coupling is needed as well. The third step is to investigate the best operational strategy. We have found that small errors in the initial density profiles are acceptable for surface current forecasts but not for deep circulation. A cold start must be avoided and a 72 h spin-up is

  17. Emprendimiento y supervivencia empresarial en época de crisis: El caso de Barcelona

    Directory of Open Access Journals (Sweden)

    Marian Buil Fabregá

    2016-02-01

    Full Text Available Objeto: El trabajo que se presenta en este artículo es la primera parte de un estudio sobre las estrategias llevadas a cabo por las empresas en épocas de crisis. Este primer artículo analiza las características financieras de las empresas creadas en Barcelona en los inicios de la crisis y que han sobrevivido durante la misma. Este estudio pretende contrastar las características financieras de las empresas analizadas con las medidas llevadas a cabo para mantener su rentabilidad en épocas de crisis y determinar si existen patrones de comportamiento distintos entre empresas creadas en sectores industriales y no industriales. Diseño/metodología: Análisis estadístico-descriptivo de las medias y variaciones de los principales indicadores financieros y de recursos humanos que se relacionan con  las medidas tomadas por las empresas  en época de crisis. La base de datos utilizada ha sido el SABI y el período de referencia 2008-2013. Aportaciones y resultados: Las empresas creadas en Barcelona en los inicios de la crisis y que han sobrevivido presentan algunos rasgos comunes: muestran un EBITDA positivo, los recursos propios constituyen una fuente relevante de financiación, tienden a reducir su nivel de endeudamiento o se disminuye inversión. Los ratios de la rentabilidad financiera son muy bajos ya que el patrimonio neto de la empresa es alto y la deuda es baja. Referente a los indicadores de recursos humanos, nos indican la importancia de las empresas de nueva creación en la generación de empleo y sus tasas de productividad son altas. Valor añadido: Determinar las características financieras de las empresas creadas en los inicios de la crisis y que sobreviven en Barcelona en época de crisis para determinar si siguen medidas para mantener su rentabilidad. La existencia de un conjunto de medidas estadísticamente significativas puede servir de guía a los emprendedores del futuro así como de las políticas públicas de apoyo a los

  18. Geodetic Infrastructure in the Ibiza and Barcelona Harbours for Sea Level Monitoring

    Science.gov (United States)

    Martinez-Benjamin, J. J.; Gili, J.; Lopez, R.; Tapia, A.; Perez, B.; Pros, F.

    2013-12-01

    The presentation is directed to the description of the actual situation and relevant information of the geodetic infrastructure of Ibiza and Barcelona sites for sea level determination and contribution to regional sea level rise. Time series are being analysed for mean sea level variations www.puertos.es. .In the framework of a Spanish Space Project, the instrumentation of sea level measurements has been improved by providing the Barcelona site with a radar tide gauge Datamar 2000C from Geonica s.l. near an acoustic tide gauge. Puertos del Estado installed in 2007 a MIROS radar tide gauge and the Barcelona Harbour Authority a GPS referente station in the roof of the new Control Tower situated in the Energy Pier. The radar sensor is over the water surface, on a L-shaped structure which elevates it a few meters above the quay shelf. 1-min data are transmitted to the ENAGAS Control Center by cable and then sent each 1 min to Puertos del Estado by e-mail. There is a GPS station Leica Geosystems GRX1200 GG Pro and antenna 1202. Precision levelling has been made several times in the last two years because the tower is founded in reclaimed land. The measured settlement rate is about 1cm/year that may be could mask the values registered by the tide gauge. A description of the actual infrastructure at Ibiza harbour at Marina de Botafoch, is presented and its applications to sea level monitoring and altimeter calibration in support of the main CGPS at Ibiza harbour. It is described the geometrical precision levelling made in June 2013 between the radar tide gauge and the GPS station. In particular, the CGPS located at Ibiza harbour is essential for its application to the marine campaign Baleares 2013, near Ibiza island. The main objective is to determine the altimeter bias for Jason-2, about 9:09 UTC September 15, 2013, and Saral/AltiKa, about 05:30 UTC September 16, UTC. These activities has been received funding of the Ministerio de Ciencia e Innovacion under Spanish

  19. On the spatial distribution and evolution of ultrafine particles in Barcelona

    Directory of Open Access Journals (Sweden)

    M. Dall'Osto

    2013-01-01

    Full Text Available Sources and evolution of ultrafine particles were investigated both horizontally and vertically in the large urban agglomerate of Barcelona, Spain. Within the SAPUSS project (Solving Aerosol Problems by Using Synergistic Strategies, a large number of instruments was deployed simultaneously at different monitoring sites (road, two urban background, regional background, urban tower 150 m a.s.l., urban background tower site 80 m a.s.l. during a 4 week period in September–October 2010. Particle number concentrations (N>5 nm are highly correlated with black carbon (BC at all sites only under strong vehicular traffic influences. By contrast, under cleaner atmospheric conditions (low condensation sink, CS such correlation diverges towards much higher N/BC ratios at all sites, indicating additional sources of particles including secondary production of freshly nucleated particles. Size-resolved aerosol distributions (N10–500 as well as particle number concentrations (N>5 nm allow us to identify three types of nucleation and growth events: (1 a regional type event originating in the whole study region and impacting almost simultaneously the urban city of Barcelona and the surrounding urban background area; (2 a regional type event impacting only the regional background area but not the urban agglomerate; (3 an urban type event which originates only within the city centre but whose growth continues while transported away from the city to the regional background. Furthermore, during these clean air days, higher N are found at tower level than at ground level only in the city centre whereas such a difference is not so pronounced at the remote urban background tower. In other words, this study suggests that the column of air above the city ground level possesses the optimal combination between low CS and high vapour source, hence enhancing the concentrations of freshly nucleated

  20. On the spatial distribution and evolution of ultrafine particles in Barcelona

    Science.gov (United States)

    Dall'Osto, M.; Querol, X.; Alastuey, A.; O'Dowd, C.; Harrison, R. M.; Wenger, J.; Gómez-Moreno, F. J.

    2013-01-01

    Sources and evolution of ultrafine particles were investigated both horizontally and vertically in the large urban agglomerate of Barcelona, Spain. Within the SAPUSS project (Solving Aerosol Problems by Using Synergistic Strategies), a large number of instruments was deployed simultaneously at different monitoring sites (road, two urban background, regional background, urban tower 150 m a.s.l., urban background tower site 80 m a.s.l.) during a 4 week period in September-October 2010. Particle number concentrations (N>5 nm) are highly correlated with black carbon (BC) at all sites only under strong vehicular traffic influences. By contrast, under cleaner atmospheric conditions (low condensation sink, CS) such correlation diverges towards much higher N/BC ratios at all sites, indicating additional sources of particles including secondary production of freshly nucleated particles. Size-resolved aerosol distributions (N10-500) as well as particle number concentrations (N>5 nm) allow us to identify three types of nucleation and growth events: (1) a regional type event originating in the whole study region and impacting almost simultaneously the urban city of Barcelona and the surrounding urban background area; (2) a regional type event impacting only the regional background area but not the urban agglomerate; (3) an urban type event which originates only within the city centre but whose growth continues while transported away from the city to the regional background. Furthermore, during these clean air days, higher N are found at tower level than at ground level only in the city centre whereas such a difference is not so pronounced at the remote urban background tower. In other words, this study suggests that the column of air above the city ground level possesses the optimal combination between low CS and high vapour source, hence enhancing the concentrations of freshly nucleated particles. By contrast, within stagnant polluted atmospheric conditions, higher N and BC

  1. Crystal structure of A. aeolicus argonaute, a site-specific DNA-guided endoribonuclease, provides insights into RISC-mediated mRNA cleavage

    Energy Technology Data Exchange (ETDEWEB)

    Yuan,Y.; Pei, Y.; Ma, J.; Kuryavyi, V.; Zhadina, M.; Meister, G.; Chen, H.; Dauter, Z.; Tuschi, T.; Patel, D.

    2005-01-01

    Argonaute (Ago) proteins constitute a key component of the RNA-induced silencing complex (RISC). We report the crystal structure of Aquifex aeolicus Ago (Aa-Ago) together with binding and cleavage studies, which establish this eubacterial Ago as a bona fide guide DNA strand-mediated site-specific RNA endonuclease. We have generated a stereochemically robust model of the complex, where the guide DNA-mRNA duplex is positioned within a basic channel spanning the bilobal interface, such that the 5' phosphate of the guide strand can be anchored in a basic pocket, and the mRNA can be positioned for site-specific cleavage by RNase H-type divalent cation-coordinated catalytic Asp residues of the PIWI domain. Domain swap experiments involving chimeras of human Ago (hAgo1) and cleavage-competent hAgo2 reinforce the role of the PIWI domain in 'slicer' activity. We propose a four-step Ago-mediated catalytic cleavage cycle model, which provides distinct perspectives into the mechanism of guide strand-mediated mRNA cleavage within the RISC.

  2. A new loss-of-function allele 28y reveals a role of ARGONAUTE1 in limiting asymmetric division of stomatal lineage ground cell

    Institute of Scientific and Technical Information of China (English)

    Kezhen Yangy; Min Jiangy; Jie Le

    2014-01-01

    In Arabidopsis thaliana L., stomata are produced through a series of divisions including asymmetric and symmetric divisions. Asymmetric entry division of meristemoid mother cellproduces two daughter cells, the smal er meristemoid and the larger sister cell, a stomatal lineage ground cell(SLGC). Stomatal lineage ground cells can differentiate into epidermal pavement cells but have the potential to divide asymmetrical y, spacing divisions, to create satel ite meristemoids. Peptide ligands and TOO MANY MOUTHS (TMM) and ERECTA family receptors regulate the initiation of stomatal lineages, activity, and orientation of spacing divisions. Here, we reported that a natural mutant 28y displayed an increased stomatal density and index. Using map-based cloning, we identified mutation in ARGONAUTE1 (AGO1) as the cause of 28y phenotypes. Time-lapse tracing of stomatal lineage cells reveals that stomatal overproduction in 28y is caused by the excessive asymmetric spacing division of SLGCs.Further genetic results demonstrated that AGO1 acts down-stream of TMM and negatively regulates the SPCH transcripts, but in a brassinosteroid-independent manner. Upregulation of AGAMOUS-LIKE16 (AGL16) in 28y mutants suggests that AGO1 is required to restrict AGL16-mediated stomatal spacing divisions, an miRNA pathway in addition to ligand-receptor signaling modules.

  3. Markov State Models Reveal a Two-Step Mechanism of miRNA Loading into the Human Argonaute Protein: Selective Binding followed by Structural Re-arrangement

    KAUST Repository

    Jiang, Hanlun

    2015-07-16

    Argonaute (Ago) proteins and microRNAs (miRNAs) are central components in RNA interference, which is a key cellular mechanism for sequence-specific gene silencing. Despite intensive studies, molecular mechanisms of how Ago recognizes miRNA remain largely elusive. In this study, we propose a two-step mechanism for this molecular recognition: selective binding followed by structural re-arrangement. Our model is based on the results of a combination of Markov State Models (MSMs), large-scale protein-RNA docking, and molecular dynamics (MD) simulations. Using MSMs, we identify an open state of apo human Ago-2 in fast equilibrium with partially open and closed states. Conformations in this open state are distinguished by their largely exposed binding grooves that can geometrically accommodate miRNA as indicated in our protein-RNA docking studies. miRNA may then selectively bind to these open conformations. Upon the initial binding, the complex may perform further structural re-arrangement as shown in our MD simulations and eventually reach the stable binary complex structure. Our results provide novel insights in Ago-miRNA recognition mechanisms and our methodology holds great potential to be widely applied in the studies of other important molecular recognition systems.

  4. A Flexible Domain-Domain Hinge Promotes an Induced-fit Dominant Mechanism for the Loading of Guide-DNA into Argonaute Protein in Thermus thermophilus.

    Science.gov (United States)

    Zhu, Lizhe; Jiang, Hanlun; Sheong, Fu Kit; Cui, Xuefeng; Gao, Xin; Wang, Yanli; Huang, Xuhui

    2016-03-17

    Argonaute proteins (Ago) are core components of the RNA Induced Silencing Complex (RISC) that load and utilize small guide nucleic acids to silence mRNAs or cleave foreign DNAs. Despite the essential role of Ago in gene regulation and defense against virus, the molecular mechanism of guide-strand loading into Ago remains unclear. We explore such a mechanism in the bacterium Thermus thermophilus Ago (TtAgo), via a computational approach combining molecular dynamics, bias-exchange metadynamics, and protein-DNA docking. We show that apo TtAgo adopts multiple closed states that are unable to accommodate guide-DNA. Conformations able to accommodate the guide are beyond the reach of thermal fluctuations from the closed states. These results suggest an induced-fit dominant mechanism for guide-strand loading in TtAgo, drastically different from the two-step mechanism for human Ago 2 (hAgo2) identified in our previous study. Such a difference between TtAgo and hAgo2 is found to mainly originate from the distinct rigidity of their L1-PAZ hinge. Further comparison among known Ago structures from various species indicates that the L1-PAZ hinge may be flexible in general for prokaryotic Ago's but rigid for eukaryotic Ago's. PMID:26908081

  5. Polymorphic homoeolog of key gene of RdDM pathway, ARGONAUTE4_9 class is associated with pre-harvest sprouting in wheat (Triticum aestivum L..

    Directory of Open Access Journals (Sweden)

    Manjit Singh

    Full Text Available Resistance to pre-harvest sprouting (PHS is an important objective for the genetic improvement of many cereal crops, including wheat. Resistance, or susceptibility, to PHS is mainly influenced by seed dormancy, a complex trait. Reduced seed dormancy is the most important aspect of seed germination on a spike prior to harvesting, but it is influenced by various environmental factors including light, temperature and abiotic stresses. The basic genetic framework of seed dormancy depends on the antagonistic action of abscisic acid (ABA and gibberellic acid (GA to promote dormancy and germination. Recent studies have revealed a role for epigenetic changes, predominantly histone modifications, in controlling seed dormancy. To investigate the role of DNA methylation in seed dormancy, we explored the role of ARGONAUTE4_9 class genes in seed development and dormancy in wheat. Our results indicate that the two wheat AGO4_9 class genes i.e. AGO802 and AGO804 map to chromosomes 3L and 1L are preferentially expressed in the embryos of developing seeds [corrected]. Differential expressions of AGO802-B in the embryos of PHS resistant and susceptible varieties also relates with DNA polymorphism in various wheat varieties due to an insertion of a SINE-like element into this gene. DNA methylation patterns of the embryonic tissue from six PHS resistant and susceptible varieties demonstrate a correlation with this polymorphism. These results suggest a possible role for AGO802-B in seed dormancy and PHS resistance through the modulation of DNA methylation.

  6. Polymorphic homoeolog of key gene of RdDM pathway, ARGONAUTE4_9 class is associated with pre-harvest sprouting in wheat (Triticum aestivum L.).

    Science.gov (United States)

    Singh, Manjit; Singh, Surinder; Randhawa, Harpinder; Singh, Jaswinder

    2013-01-01

    Resistance to pre-harvest sprouting (PHS) is an important objective for the genetic improvement of many cereal crops, including wheat. Resistance, or susceptibility, to PHS is mainly influenced by seed dormancy, a complex trait. Reduced seed dormancy is the most important aspect of seed germination on a spike prior to harvesting, but it is influenced by various environmental factors including light, temperature and abiotic stresses. The basic genetic framework of seed dormancy depends on the antagonistic action of abscisic acid (ABA) and gibberellic acid (GA) to promote dormancy and germination. Recent studies have revealed a role for epigenetic changes, predominantly histone modifications, in controlling seed dormancy. To investigate the role of DNA methylation in seed dormancy, we explored the role of ARGONAUTE4_9 class genes in seed development and dormancy in wheat. Our results indicate that the two wheat AGO4_9 class genes i.e. AGO802 and AGO804 map to chromosomes 3L and 1L are preferentially expressed in the embryos of developing seeds [corrected]. Differential expressions of AGO802-B in the embryos of PHS resistant and susceptible varieties also relates with DNA polymorphism in various wheat varieties due to an insertion of a SINE-like element into this gene. DNA methylation patterns of the embryonic tissue from six PHS resistant and susceptible varieties demonstrate a correlation with this polymorphism. These results suggest a possible role for AGO802-B in seed dormancy and PHS resistance through the modulation of DNA methylation. PMID:24130825

  7. Reactor Physics

    International Nuclear Information System (INIS)

    The Reactor Physics and MYRRHA Department of SCK-CEN offers expertise in various areas of reactor physics, in particular in neutronics calculations, reactor dosimetry, reactor operation, reactor safety and control and non-destructive analysis of reactor fuel. This expertise is applied in the Department's own research projects in the VENUS critical facility, in the BR1 reactor and in the MYRRHA project (this project aims at designing a prototype Accelerator Driven System). Available expertise is also used in programmes external to the Department such as the reactor pressure steel vessel programme, the BR2 reactor dosimetry, and the preparation and interpretation of irradiation experiments by means of neutron and gamma calculations. The activities of the Fuzzy Logic and Intelligent Technologies in Nuclear Science programme cover several domains outside the department. Progress and achievements in these topical areas in 2000 are summarised

  8. Reactor Physics

    International Nuclear Information System (INIS)

    SCK-CEN's Reactor Physics and MYRRHA Department offers expertise in various areas of reactor physics, in particular in neutron and gamma calculations, reactor dosimetry, reactor operation and control, reactor code benchmarking and reactor safety calculations. This expertise is applied in the Department's own research projects in the VENUS critical facility, in the BR1 reactor and in the MYRRHA project (this project aims at designing a prototype Accelerator Driven System). Available expertise is also used in programmes external to the Department such as the reactor pressure steel vessel programme, the BR2 materials testing reactor dosimetry, and the preparation and interpretation of irradiation experiments by means of neutron and gamma calculations. The activities of the Fuzzy Logic and Intelligent Technologies in Nuclear Science programme cover several domains outside the department. Progress and achievements in these topical areas in 2001 are summarised

  9. Reactor Physics

    Energy Technology Data Exchange (ETDEWEB)

    Ait Abderrahim, A

    2001-04-01

    The Reactor Physics and MYRRHA Department of SCK-CEN offers expertise in various areas of reactor physics, in particular in neutronics calculations, reactor dosimetry, reactor operation, reactor safety and control and non-destructive analysis of reactor fuel. This expertise is applied in the Department's own research projects in the VENUS critical facility, in the BR1 reactor and in the MYRRHA project (this project aims at designing a prototype Accelerator Driven System). Available expertise is also used in programmes external to the Department such as the reactor pressure steel vessel programme, the BR2 reactor dosimetry, and the preparation and interpretation of irradiation experiments by means of neutron and gamma calculations. The activities of the Fuzzy Logic and Intelligent Technologies in Nuclear Science programme cover several domains outside the department. Progress and achievements in these topical areas in 2000 are summarised.

  10. WePreserve 2009: DPE/Planets/CASPAR/nestor Joint Training Event: The Preservation challenge: basic concepts and practical applications (Barcelona, 23-27 març 2009)

    OpenAIRE

    López-Pérez, Cristina

    2009-01-01

    Reseña del congreso WePreserve 2009 que tuvo lugar los pasados 23 al 27 de marzo en Barcelona, organizadopor la Facultad de Biblioteconomía y Documentación de la Universitat de Barcelona, con la colaboración del Institut d'Estudis Catalans, la Biblioteca de Catalunya y el Consorci de Biblioteques de Barcelona. El seminario 2009 WePreserve se celebra anualmente desde el año 2007 y participan todas las figuras de referencia europeas en materia de investigación en sistemas y metodologías que gar...

  11. Estudio cronológico de la evolución de los estucos de cal en la ciudad de Barcelona

    OpenAIRE

    Méndez Pendavis, Edith

    2010-01-01

    El objetivo de este proyecto es el Estudio cronológico de la evolución de los Estucos de Cal en la Ciudad de Barcelona. Barcelona es una ciudad donde los estucos de cal están muy presentes en sus fachadas, actualmente no se conoce que exista mucha documentación sobre este tema así que mediante este trabajo se intenta conocer más profundamente esta técnica de revestimiento de fachadas centrado principalmente en Barcelona. A partir de la poca información que he podido recopila...

  12. Performance da equipe do Barcelona e seus adversários nos jogos finais da Champions League e da Copa do Mundo de Clubes FIFA 2010

    OpenAIRE

    I. Cambre Añon; C.J.R. Lizana; E. Calazans; Machado, J. C.; I.T. da Costa; A.J. Scaglia

    2014-01-01

    Objetivo: El presente estudio tiene como objetivo evaluar el rendimiento del equipo en la confrontación del Barcelona con sus oponentes, en los dos partidos más importantes de la temporada (finales de la Copa Mundial de Clubes FIFA y la UEFA Champions League), entre Barcelona y Santos FC, y entre Barcelona y Man-chester United, respectivamente. Método: El análisis de las conductas realizadas por los jugadores ha tenido en cuenta el número de jugadores involucrados y los fundamentos técnico...

  13. Reactor operation

    CERN Document Server

    Shaw, J

    2013-01-01

    Reactor Operation covers the theoretical aspects and design information of nuclear reactors. This book is composed of nine chapters that also consider their control, calibration, and experimentation.The opening chapters present the general problems of reactor operation and the principles of reactor control and operation. The succeeding chapters deal with the instrumentation, start-up, pre-commissioning, and physical experiments of nuclear reactors. The remaining chapters are devoted to the control rod calibrations and temperature coefficient measurements in the reactor. These chapters also exp

  14. Reactor safeguards

    CERN Document Server

    Russell, Charles R

    2013-01-01

    Reactor Safeguards provides information for all who are interested in the subject of reactor safeguards. Much of the material is descriptive although some sections are written for the engineer or physicist directly concerned with hazards analysis or site selection problems. The book opens with an introductory chapter on radiation hazards, the construction of nuclear reactors, safety issues, and the operation of nuclear reactors. This is followed by separate chapters that discuss radioactive materials, reactor kinetics, control and safety systems, containment, safety features for water reactor

  15. Articulación entre lo local y lo global. Templo Sagrada Familia en Barcelona

    Directory of Open Access Journals (Sweden)

    Patricia López González

    2015-03-01

    Full Text Available At present the global and local link becomes an increasingly importance to balanced regional development. The architecture plays a key role as articulator of both scales. In Barcelona, the Sagrada Familia Temple stands as an element that responds to the global space of flows and to the space of places. It aims to understand the reality of these works so that the physical planning of cities put a special look on these urban landmarks. For this is proposed to analyze and evaluate the spatial effect that has been the link between local and global at the Sagrada Familia Temple from a theoretical standpoint and from three areas: the economic, the infrastructural and the morphology. The results show that the project begun by Gaudí in 1883 can meet the demands of both global and local scale and to develop the building along with the neighborhood has not been a negative impact on it.

  16. Climate Change and Health in the Urban Context: The Experience of Barcelona.

    Science.gov (United States)

    Villalbí, Joan R; Ventayol, Irma

    2016-07-01

    Climate change poses huge challenges for public health, and cities are at the forefront of this process. The purpose of this paper is to present the issues climate change poses for public health in the city of Barcelona, how they are being addressed, and what are the current major challenges, trying to contribute to the development of a baseline understanding of the status of adaptation in cities from a public health perspective. The major issues related to climate change faced by the city are common to other urban centers in a Mediterranean climate: heat waves, water availability and quality, air quality, and diseases transmitted by vectors, and all are reviewed in detail with empirical data. They are not a potential threat for the future, but have actually challenged the city services and infrastructure over the last years, requiring sustainable responses and rigorous planning. PMID:27387343

  17. Documents sobre el monestir de Sant Pau del Camp, de Barcelona (segles XIII-XIV)

    OpenAIRE

    Mutgé Vives, Josefina

    1994-01-01

    Com que entre les moltes línies d'investigació cultivades pel Dr. Trenchs també hi figurava la història monàstica -només ens cal recordar que la seva tesi de llicenciatura, presentada en el llunya any de 1966, consistí en l'estudi de la Cartoixa de Scala Dei-, ens plau d'oferir-li aquí alguns documents inèdits sobre el monestir benedictí de Sant Pau del Camp, de Barcelona, procedents dels registres de cancelleria reial de l'Arxiu de la Corona d'Aragó, que constitueixen la primícia d'un futur ...

  18. La Ingeniería Computacional en la Escuela de Caminos de Barcelona

    OpenAIRE

    Huerta, Antonio; Díez, Pedro; Fernandez Mendez, Sonia; Pérez Foguet, Agustí; Rodríguez Ferran, Antonio; Sarrate Ramos, Josep

    2003-01-01

    La ingeniería computacional se ha consolidado ya como una disciplina horizontal en el ámbito de la ingeniería civil. La modelización numérica es, cada vez más, una alternativa para el cálculo y diseño en inge niería a los procedimientos simplificados típicamente recogidos por las normativas. Permite analizar fenómenos de mayor complejidad y obtener diseños más ajustados. En la Escuela de Caminos de Barcelona, estos aspectos se abordan en la intensificación en ingeniería computacional. Los mét...

  19. An observational study of the 7 September 2005 Barcelona tornado outbreak

    Directory of Open Access Journals (Sweden)

    J. Bech

    2007-01-01

    Full Text Available This paper presents an observational study of the tornado outbreak that took place on the 7 September 2005 in the Llobregat delta river, affecting a densely populated and urbanised area and the Barcelona International airport (NE Spain. The site survey confirmed at least five short-lived tornadoes. Four of them were weak (F0, F1 and the other one was significant (F2 on the Fujita scale. They started mostly as waterspouts and moved later inland causing extensive damage estimated in 9 million Euros, three injured people but fortunately no fatalities. Large scale forcing was provided by upper level diffluence and low level warm air advection. Satellite and weather radar images revealed the development of the cells that spawned the waterspouts along a mesoscale convergence line in a highly sheared and relatively low buoyant environment. Further analysis indicated characteristics that could be attributed indistinctively to non-supercell or to mini-supercell thunderstorms.

  20. Telefotografía en Unión Radio Barcelona: 1930-1932

    OpenAIRE

    Ruiz del Olmo, Francisco Javier

    2011-01-01

    A finales de los años veinte del siglo pasado, la cadena radiofónica Unión Radio puso en marcha una serie de servicios de transmisión de fotografías, a través exclusivamente de sus emisoras de Madrid y Barcelona. En un contexto de competencia radiofónica, de experimentación y supremacía técnica como factor de prestigio social ante radioaficionados y autoridades, así como de diversificación de la programación y búsqueda de nuevas fórmulas, la telefotografía se convertirá en una forma de radiod...

  1. A Neanderthal Lower Incisor from Cova del Gegant (Sitges, Barcelona, Spain)

    OpenAIRE

    Rodríguez García, Laura; García González, Rebeca; Sanz, Montserrat; Daura, Joan; Quam, Rolf; Josep María FULLOLA; Arsuaga, Juan Luis

    2011-01-01

    La Cova del Gegant está localizada en el término municipal de Sitges (Barcelona, España). La cavidad está desarrollada dentro de una diaclasa en un pequeño sistema kárstico que contiene material paleontológico y arqueológico del Pleistoceno Superior (Daura, et al., 2005). El yacimiento fue excavado por primera vez en 1954 y posteriormente en la década de los ’70 (Viñas, 1972; Viñas & Villalta, 1975) y ‘80 (Martínez et al., 1985; Mora, 1988; Martínez et al., 1990). Finalmente desde el 2007 el ...

  2. Natural and anthropogenic radionuclides in airborne particulate samples collected in Barcelona (Spain)

    International Nuclear Information System (INIS)

    Results for naturally occurring 7Be, 210Pb, 40K, 214Bi, 214Pb, 212Pb, 228Ac and 208Tl and anthropogenic 137Cs in airborne particulate matter in the Barcelona area during the period from January 2001 to December 2005 are presented and discussed. The 212Pb and 208Tl, 214Bi and 214Pb, 7Be and 210Pb radionuclide levels showed a significant correlation with each other, with correlation coefficients of 0.99, 0.78 and 0.69, respectively, suggesting similar origin/behaviour of these radionuclides in the air. Caessium-137 and Potassium-40 were transported to the air as resuspended particle from the soil. The 7Be and 210Pb concentrations showed similar seasonal variations, with a tendency for maximum concentrations during the summer months. An inverse relationship was observed between the 7Be, 210Pb, 40K and 137Cs concentrations and weekly rainfall, indicating washout of atmospheric aerosols carrying these radionuclides

  3. Quantification of thermal bioclimate for the management of urban design in Mediterranean climate of Barcelona, Spain.

    Science.gov (United States)

    Rodríguez Algeciras, José Abel; Matzarakis, Andreas

    2016-08-01

    In order to contribute to the sustainability of the outdoor environment, knowledge about the urban thermal bioclimate should be transferred into climatic guidelines for planning. The general framework of this study responds to the need of analyzing thermal bioclimate in Mediterranean climate regions and its influence as an urban design factor. The paper analyzes the background of the urban climate and thermal bioclimate conditions in Barcelona (Spain), through the effect of shade conditions and wind speed variations. Simulations of shade and wind speed variations were performed to evaluate changes in thermal bioclimate due to modifications in urban morphology. Air temperature, relative humidity, wind speed, and solar radiation for the period from January, 2001 to January, 2015 were used to calculate physiologically equivalent temperature (PET) using the RayMan model. The results demonstrate that shade is the most important strategy to improve urban microclimatic conditions. In Barcelona, human thermal comfort conditions can be improved by shade and wind speed increase in terms of PET above 23 °C and by a wind speed decrease for thresholds of PET below 18 °C. Heat stress situations can be mitigated by shade and wind speed increase in conditions above 35 and 45 °C, respectively. The results of the study are an important contribution for urban planners, due to their possibilities and potential for the description of microclimatic conditions in Mediterranean climate regions. The knowledge is useful for improved human thermal comfort conditions, from the suitable configuration of urban form and architecture. PMID:26694490

  4. Barcelona Rocks, a mobile app to learn geology in your city

    Science.gov (United States)

    Geyer, Adelina; Cabrera, Lluis; Alias, Gemma; Aulinas, Meritxell; Becerra, Margarita; Casadellà, Jordi; Clotet, Roger; Delclós, Xavier; Fernández-Turiel, José-Luis; Tarragó, Marta; Travé, Anna

    2016-04-01

    Barcelona Rocks is an application for personal mobile devices suitable for secondary and high school students as well as the general public without a solid background in Earth Sciences. The main objective of this app is to teach Geology using as learning resource our city façades and pavements. Additionally, Barcelona Rocks provides a short explanation about the significance of the appearance of the different rock types at the different historical periods of the city. Although it has been designed as a playful learning resource for secondary school students, the level of knowledge also allows bringing some basic concepts and principles of Earth Sciences to the general public, irrespective of age. This app is intended to provide the degree of interactivity and entertainment required by the different individual users and aims to: (i) Explain the techniques and experiments that allow the user to identify the different rocks, as well as their genesis. (ii) Introduce geology to the youngest users in a more attractive and entertaining way, providing also some information regarding the use of the different ornamental rocks during the different historical periods of the city: roman, medieval, etc. (iii) Provide historical and architectural information of the selected buildings in order to improve the city's historical architectural knowledge of the users. (iv) Show the non-expert public the importance of their country's geology. (v) Develop of outreach and dissemination resources taking advantage of the versatile and potent mobile application format using also the content as support material for science courses, seminars, or social learning events. (vi) Encourage new generations of Earth Scientists (vii) Promote science and scientific culture of the society, integrating culture and innovation as essential for the emergence of new scientific and technological vocations, promoting critical thinking, understanding of the scientific method and the social interest in science

  5. EL PROYECTO DE LA OLIMPIADA POPULAR DE BARCELONA (1936, ENTRE COMUNISMO INTERNACIONAL Y REPUBLICANISMO REGIONAL

    Directory of Open Access Journals (Sweden)

    André Gounot

    2005-01-01

    Full Text Available Los archivos del KOMINTERN en el Centro Ruso de Conservación y Estudio de los Documentos sobre la Historia Contemporánea (CRCRHC de Moscú, recientemente abiertos para el estudio científico, nos ofrecen fuentes documentales fundamentales para entender el desarrollo de la Internacional Deportiva Roja (IDR como una de las organizaciones auxiliares del citado KOMINTERN. Las referidas fuentes documentales han aportado nuevas informaciones y datos sobre la creación en España en 1931, con el establecimiento de la 2ª República, de la Federación Cultural y Deportiva Obrera (FCDO, organización que en 1934 se adhiere a la Internacional Deportiva Roja (IDR, siendo el embrión del nacimiento del Comité Catalán pro Deporte Popular que presentaría el proyecto de la Olimpiada Popular de Barcelona de 1936 como alternativa a la Olimpiada de Berlín de 1936 de Hitler. Por otra parte la Internacional Deportiva Roja (IDR creó a finales de 1935 el Comité Internacional para la defensa de la Idea Olímpica, cuyo objetivo era coordinar los movimientos de oposición a los Juegos de Berlín. También la propia Federación Cultural y Deportiva Obrera (FDCO fundó en 1936 el Comité Español de Defensa del Espíritu Olímpico con este mismo fin. La Olimpiada Popular de Barcelona de 1936 permitió entre otras cosas expresar la nueva alianza entre Comunismo y Olimpismo, construida con discursos contradictorios apoyándose en el universalismo, la paz y la igualdad de razas.

  6. Photochemical modelling of the Barcelona area under weak pressure synoptic summer conditions

    International Nuclear Information System (INIS)

    This city of Barcelona and its surrounding area, located in the western Mediterranean basin, can reach high levels of O3 in summertime under weak pressure synoptic conditions. To study the origin of this photochemical pollution, the episode that took place between the 3 and 5 August 1990 was chosen. The main meteorological mesoscale flows that take place in the region, such as sea and land breeze, convection cells and topographic injections, were reproduced with the meteorological non-hydrostatic mesoscale model MEMO for 5 August 1990. Industrial and commercial activity on 5 August 1990 was very low because it was a Sunday in the summer holiday period. Therefore, the emissions inventory calculated for this day in an area of 80x80 km2 around Barcelona showed that the main sources of VOC were traffic (51%) and vegetation (34%), while NOx were mostly emitted by traffic (88%). Photochemical simulation with the MARS model has shown that the combination of mesoscale circulations and local emissions is crucial in the production of O3. For instance, NOx inland transport towards regions where biogenic VOC are emitted causes the formation of O3, while topographic injections cause the formation of elevated O3 air layers. The synoptic wind, coming from the northeast in this case, also played an important role in advecting the air masses with local generated O3 away from their precursor emission sources. Evaluation of the model simulations is also performed and discussed by means of comparison of meteorological measurements in 9 surface stations and concentration measurements in 5 surface stations. (Author)

  7. Disfagia en ancianos que viven en residencias geriátricas de Barcelona Dysphagia in the elderly living in nursing homes Barcelona

    Directory of Open Access Journals (Sweden)

    M.ª José Torres Camacho

    2011-03-01

    Full Text Available El 15% de las personas mayores de 65 años sufre disfagia y la prevalencia en residencias geriátricas (RG se estima en un 40%. Objetivos: conocer la prevalencia de ancianos con disfagia en RG de Barcelona y describir el estado funcional (físico y psíquico, edad, sexo, patologías, fármacos que inciden en la posible aparición de la disfagia y valorar las medidas dietéticas adoptadas por las RG para el manejo de la disfagia. Métodos: se han estudiado 1.777 residentes de 66 RG valorados por la Unidad de Atención Domiciliaria Geriátrica (UADG hasta septiembre de 2008. El estudio se realiza mediante un cuestionario elaborado por la UADG asesorado por Nestlé Nutrition. Resultados: el perfil de las personas con disfagia es de mujeres mayores de 85 años con dependencia física importante y deterioro cognitivo severo. La mitad presenta algún tipo de demencia. La prevalencia de disfagia es del 5,40%. La disfagia a líquidos es del 88,52%. La utilización de espesantes comerciales es reducida. La prevalencia de disfagias a texturas mixtas es del 76,03%. La dieta triturada se da en el 79,16%. Utiliza dieta adecuada el 87,5%. La disfagia sólo consta en la historia clínica en el 13,54%. Conclusiones: la disfagia debe quedar reflejada en la historia clínica. El personal de las RG necesita formación para reconocer los signos de alerta indicativos de disfagia. Las medidas dietéticas son fundamentales.15% of people over 65 suffer dysphagia and prevalence in geriatric residences (GR is estimated at 40%. Objectives: to determine the prevalence of dysphagia in elderly in GR at Barcelona and to describe the functional status (physical and mental, age, sex, diseases, drugs that affect the possible occurrence of dysphagia and to assess dietary measures taken by the GR to management of dysphagia. Methods: we studied 1.777 residents of 66 GR, assessed by the Geriatric Home Care Unit (UADG until September 2008. The study was conducted by questionnarie

  8. Research Reactors

    Energy Technology Data Exchange (ETDEWEB)

    Martens, Frederick H. [Argonne National Laboratory; Jacobson, Norman H.

    1968-09-01

    This booklet discusses research reactors - reactors designed to provide a source of neutrons and/or gamma radiation for research, or to aid in the investigation of the effects of radiation on any type of material.

  9. Evolution of service to the power reactor community at the UFTR - beyond the bottom line

    International Nuclear Information System (INIS)

    The University of Florida Training Reactor (UFTR) is a 100-kW light-water-cooled, graphite-and-light-water-moderated modified argonaut-type reactor. Although currently fueled with highly enriched (93% 235U) fuel, analyses are nearly completed for conversion to low-enriched fuel. The core design consists of individual fuel boxes in each of which flow is constrained which is a relatively unique feature among existing nonpower reactors (NPRs), making measurement of hot channel factors and other core parameters a straightforward exercise for operator trainees. Since first licensed to operate at 10 kill in 1959, this NPR facility has had an active but evolving record of continuous service to the power reactor community. Because of its midsize power level, available flux levels limit utilization for radiation damage and other studies in which utilities have been served by other NPR facilities. As a result, UFTR service to the power reactor community has been concentrated in areas where the peak thermal flux (∼2 x 1012 n/cm2 ·s) at full power does not present a significant limitation

  10. Spent fuel management for research reactors

    International Nuclear Information System (INIS)

    There are six research reactors in Argentina using fuel elements uranium enriched from 20 to 90%. Spent fuel elements management is limited to RA-1 (Argonaut type used for training) and RA-3 (for experimentation and radioisotope production), as for the others no changes have been carried out over the cores. The first core of RA-1 was reprocessed and the second core was manufactured with U3O8 obtained from reprocessing, and once spent was transferred to a dry storage. RA-3 is pool type and fuel elements are MTR enriched at 90% 24 fuel elements in the core. Up to now 238 fuel elements have been used with burn-up from 16 to 40% and about 8 gU per plate. At present RA-3 is being remodelled in order to be able to use fuel elements enriched to 20%. After decay in a pool at reactor building, they are transported to a wet storage facility for spent fuel elements. Control rods are treated in the same way. From 15 years of storage facility operation, it follows as a consequence that the proposed objectives have been fulfilled sufficiently well, as shown by radioactivity measurements on the water hole lines (5 x 10-4 Ci/m3 of Cs-137) and the neutron interrogation method on the spent fuel elements tested presented values less than 10-8 gU/cm3, that was considered acceptable). Nevertheless, some corrosion areas were observed. Program activities involve on one hand mainly new chemical and physical controls in order to optimize spent fuel storage and, on the other hand, the study of the corrosion observed with the aim to minimize it and to ensure safe storage. (author). 6 figs, 2 tabs

  11. Research reactors

    International Nuclear Information System (INIS)

    This article proposes an overview of research reactors, i.e. nuclear reactors of less than 100 MW. Generally, these reactors are used as neutron generators for basic research in matter sciences and for technological research as a support to power reactors. The author proposes an overview of the general design of research reactors in terms of core size, of number of fissions, of neutron flow, of neutron space distribution. He outlines that this design is a compromise between a compact enough core, a sufficient experiment volume, and high enough power densities without affecting neutron performance or its experimental use. The author evokes the safety framework (same regulations as for power reactors, more constraining measures after Fukushima, international bodies). He presents the main characteristics and operation of the two families which represent almost all research reactors; firstly, heavy water reactors (photos, drawings and figures illustrate different examples); and secondly light water moderated and cooled reactors with a distinction between open core pool reactors like Melusine and Triton, pool reactors with containment, experimental fast breeder reactors (Rapsodie, the Russian BOR 60, the Chinese CEFR). The author describes the main uses of research reactors: basic research, applied and technological research, safety tests, production of radio-isotopes for medicine and industry, analysis of elements present under the form of traces at very low concentrations, non destructive testing, doping of silicon mono-crystalline ingots. The author then discusses the relationship between research reactors and non proliferation, and finally evokes perspectives (decrease of the number of research reactors in the world, the Jules Horowitz project)

  12. Una aproximación a la segregación digital metropolitana y urbana: las comarcas de la provincia de Barcelona y los distritos de la ciudad de Barcelona en el año 2000

    Directory of Open Access Journals (Sweden)

    Chaparro Mendivelso Jeffer

    2008-12-01

    Full Text Available La segregación digital se refiere a la diferenciación en cuanto al acceso y al uso de las tecnologías digitales de la información y la comunicación (TDIC . Esa diferenciación puede establecerse tanto en términos sociodemográficos como territoriales. El artículo que se presenta es un intento de perfilar la segregación digital en las escalas regional y local, específicamente en las comarcas de la provincia de Barcelona y en los distritos de la ciudad de Barcelona en el año 2000. El uso de información a nivel de hogares permitió constatar territorialmente la existencia de algunas variables sociodemográficas que influyen en la conexión a Internet.

  13. Reactor physics and reactor computations

    International Nuclear Information System (INIS)

    Mathematical methods and computer calculations for nuclear and thermonuclear reactor kinetics, reactor physics, neutron transport theory, core lattice parameters, waste treatment by transmutation, breeding, nuclear and thermonuclear fuels are the main interests of the conference

  14. El Museo Pedagógico Experimental de Barcelona: enclave para una historia de los pequeños museos pedagógicos

    OpenAIRE

    Eulàlia COLLELLDEMONT; Ángel Carlos MOREU

    2009-01-01

    RESUMEN: El Museo Pedagógico experimental de Barcelona, iniciativa diseñada en 1907, sigue pautas de otras propuestas ya desarrolladas en Europa y por Cossío en el Museo Pedagógico de Madrid desde 1882. Es una envidiable plataforma pedagógica con orientación experimental.ABSTRACT: The Experimental Pedagogical Museum in Barcelona was designed in 1907 following European patterns. It was an excellent pedagogical platform with experimental courses.

  15. Revisió dels odonats valencians de la col·lecció d’artròpodes del Museu de Ciències Naturals de Barcelona

    OpenAIRE

    Fontana-Bria, L.; Selfa, J.

    2012-01-01

    Revision of Valencian dragonflies in the arthropod collection at the Museu de Ciències Naturals de Barcelona The current work shows the species of Valencian dragonflies preserved in the arthropod collection at the Museu de Ciències Naturals de Barcelona (Spain). The collection contains a total of 33 specimens belonging to 12 species, representing 18% of the known species in the Autonomous Community of Valencia.

  16. Revisió dels odonats valencians de la col·lecció d’artròpodes del Museu de Ciències Naturals de Barcelona

    Directory of Open Access Journals (Sweden)

    Fontana-Bria, L.

    2012-07-01

    Full Text Available Revision of Valencian dragonflies in the arthropod collection at the Museu de Ciències Naturals de Barcelona The current work shows the species of Valencian dragonflies preserved in the arthropod collection at the Museu de Ciències Naturals de Barcelona (Spain. The collection contains a total of 33 specimens belonging to 12 species, representing 18% of the known species in the Autonomous Community of Valencia.

  17. Research reactors

    International Nuclear Information System (INIS)

    There are currently 284 research reactors in operation, and 12 under construction around the world. Of the operating reactors, nearly two-thirds are used exclusively for research, and the rest for a variety of purposes, including training, testing, and critical assembly. For more than 50 years, research reactor programs have contributed greatly to the scientific and educational communities. Today, six of the world's research reactors are being shut down, three of which are in the USA. With government budget constraints and the growing proliferation concerns surrounding the use of highly enriched uranium in some of these reactors, the future of nuclear research could be impacted

  18. Reactor container

    International Nuclear Information System (INIS)

    Object: To provide a jet and missile protective wall of a configuration being inflated toward the center of a reactor container on the inside of a body of the reactor container disposed within a biological shield wall to thereby increase safety of the reactor container. Structure: A jet and missile protective wall comprised of curved surfaces internally formed with a plurality of arch inflations filled with concrete between inner and outer iron plates and shape steel beam is provided between a reactor container surrounded by a biological shield wall and a thermal shield wall surrounding the reactor pressure vessel, and an adiabatic heat insulating material is filled in space therebetween. (Yoshino, Y.)

  19. The Role of Bullfighting and FC Barcelona in the Emancipation of Catalonia from Spain (El papel de la corrida de toros y FC Barcelona en la emancipación de Cataluña de España

    Directory of Open Access Journals (Sweden)

    TKac, John A.

    2014-09-01

    Full Text Available Abstract: This paper looks at the role that bullfighting and FC Barcelona have played in the growing independence movement in Catalonia. This article will discuss nations, the importance of bullfighting and soccer to Iberian cultures, Catalan political parties and their role in the nationalist movement, the vote to prohibit bullfighting and FC Barcelona´s increasing political conscious. I conclude that bullfighting and soccer have been used by political parties and those associated with the nationalist movement to foster feelings of difference with Spain. These feelings have been passed from the top down to the Catalan people and risk alienating those who are not in agreement with the nationalist movement. Resumen: Este trabajo examina el papel que la corrida de toros y el equipo de fútbol FC Barcelona han hecho en el movimiento continuo hacia la independencia en Cataluña. Discute el concepto de la nación, la importancia de las corridas y el fútbol en culturas ibéricas, partidos políticos catalanes y su rol en el voto a favor de la prohibición de las corridas en Cataluña y la evolución de la conciencia política cada vez más evidente de FC Barcelona. Concluyo que los partidos políticos y otros asociados con el movimiento hacia la independencia se han aprovechado de las corridas y el fútbol para destacar diferencias culturales con España. Esta actitud de diferencia se ha trasladado de arriba-abajo al pueblo catalán y el movimiento nacionalista corre el riesgo de alienar a los que no comparten sus creencias.

  20. Oligodendroglial Argonaute protein Ago2 associates with molecules of the Mbp mRNA localization machinery and is a downstream target of Fyn kinase.

    Science.gov (United States)

    Müller, Christina; Schäfer, Isabelle; Luhmann, Heiko J; White, Robin

    2015-01-01

    Oligodendrocytes myelinate neuronal axons in the central nervous system (CNS) facilitating rapid transmission of action potentials by saltatory conduction. Myelin basic protein (MBP) is an essential component of myelin and its absence results in severe hypomyelination in the CNS of rodents. Mbp mRNA is not translated immediately after exit from the nucleus in the cytoplasm, but is transported to the plasma membrane in RNA transport granules in a translationally silenced state. We have previously identified the small non-coding RNA 715 (sncRNA715) as an inhibitor of Mbp translation associated with RNA granules. Argonaute (Ago) proteins and small RNAs form the minimal core of the RNA induced silencing complex and together recognize target mRNAs to be translationally inhibited or degraded. Recently, tyrosine phosphorylation of Ago2 was reported to be a regulator of small RNA binding. The oligodendroglial non-receptor tyrosine kinase Fyn is activated by neuronal signals and stimulates the translation of Mbp mRNA at the axon-glial contact site. Here we analyzed the expression of Ago proteins in oligodendrocytes, if they associate with Mbp mRNA transport granules and are tyrosine phosphorylated by Fyn. We show that all Ago proteins (Ago1-4) are expressed by oligodendrocytes and that Ago2 colocalizes with hnRNP A2 in granular cytoplasmic structures. Ago2 associates with hnRNP A2, Mbp mRNA, sncRNA715 and Fyn kinase and is tyrosine phosphorylated in response to Fyn activity. Our findings suggest an involvement of Ago2 in the translational regulation of Mbp. The identification of Ago proteins as Fyn targets will foster further research to understand in more molecular detail how Fyn activity regulates Mbp translation. PMID:26379499

  1. Evolució de la demanda en un teixit madur : escenaris de demografia i habitatge a la ciutat de Barcelona

    OpenAIRE

    Carrera, Josep M.

    1998-01-01

    La problemàtica configurada a partir del procés de pèrdua de població jove a la ciutat de Barcelona i l’acceleració de l’envelliment de l’estructura per edats planteja la necessitat d’instruments d’anàlisi capaços de determinar la natura de la relació entre dinàmica demogràfica i polítiques d’habitatge. L’article presenta els resultats d’un estudi realitzat en el marc del Pla Estratègic de l’Habitatge de la Ciutat de Barcelona i planteja diferents escenaris de futur. Les dades de partida s’es...

  2. Polycentricity, Performance and Planning: Concepts, Evidence and Policy in Barcelona, Catalonia

    Directory of Open Access Journals (Sweden)

    Jaume Masip-Tresserra

    2016-04-01

    objectives.It is necessary to conduct a further exploration of the three aforementioned major issues related to (1 the conceptualization of polycentricity, (2 the empirical analysis of the dis(advantages of polycentricity, and (3 how to interpret the relationship between polycentricity in research and polycentricity in policy. That is the key motivation for this thesis: to link the knowledge of polycentric constellations and their economic, social, and environmental effects to planning practice and policy in metropolitan areas.General aims and questionsThe overarching research goal of this dissertation is to contribute to the debate on polycentricity in the three interrelated issues mentioned above. First, it aims to renew the conceptualization of polycentricity by bringing together two distinct literatures, namely, the literature on intra-urban polycentricity and the literature on inter-urban polycentricity. Second, it aims to empirically substantiate the relationship between polycentricity and performance in metropolitan areas. Third, it aims to understand how the makers of spatial plans have addressed polycentric development and how the assumed benefits of polycentricity can be realized in planning practice. To accomplish these goals, this thesis addresses three general research questions:How has the conceptualization of polycentric development in spatial plans evolved over time, and what can be learned from this evolution?How has polycentricity been conceptualized in research, and how can it inform planning practice?To what extent does polycentricity foster better performance in a metropolitan area, and how can its effects be realized in planning practice?Single case study: the Barcelona metropolitan regionThe case study of this thesis is the Barcelona metropolitan region. With approximately 5 million people, the Barcelona metropolitan region is the primary urban agglomeration of Catalonia, an autonomous region of 7.5 million inhabitants that is located in Spain. The

  3. Análisis de la prestación de servicios a inmigrantes en la red Bibliotecas de Barcelona

    OpenAIRE

    Cervantes-Martínez, Luisa; Navas-Luque, Marisol; Cuadrado-Guirado, Isabel

    2015-01-01

    The aim of this paper is to analyze the quality of library service provision to immigrants in the Bibliotecas de Barcelona network using as a reference IFLA’s Multicultural Communities: Guidelines for Library Services. By adopting these guidelines, public libraries can become environments capable of facilitating social cohesion, knowledge and cultural exchange, as well as interaction between users from different cultures. To carry out this study, several information sources were reviewed and ...

  4. The urban subcentros, the land use and CO2 production: analyst of the Metropolitan area of Barcelona

    OpenAIRE

    Aguirre Núñez, Carlos Andrés; Marmolejo Duarte, Carlos Ramiro

    2011-01-01

    This paper proposes a new definition of sub-centers. Density of workers is complemented with the observation of four approaches for the analysis of the Barcelona Metropolitan Area. These four approaches are the urban lands paterns (based on CORINE land cover information), the mobility of workers (from data of the Spanish Census), electric consumption (from information of the electric companies) and the estimated CO2 production. Consequently, the urban structure will be defined based on these ...

  5. Field evidence of social influence in the expression of political preferences: the case of secessionist flags in Barcelona

    OpenAIRE

    Antonio Parravano; Noguera, José A.; Paula Hermida; Jordi Tena-Sánchez

    2014-01-01

    Models of social influence have explored the dynamics of social contagion, imitation, and diffusion of different types of traits, opinions, and conducts. However, few behavioral data indicating social influence dynamics have been obtained from direct observation in "natural" social contexts. The present research provides that kind of evidence in the case of the public expression of political preferences in the city of Barcelona, where thousands of citizens supporting the secession of Cataloni...

  6. Método de doble punzonamiento de tracción indirecta para concreto reforzado con fibra: Ensayo Barcelona

    OpenAIRE

    Aire, Carlos; Aguado de Cea, Antonio; Molins i Borrell, Climent

    2013-01-01

    The present work describes the results of an experimental investigation on the performances of concrete specimens reinforced with steel fibers using the double punch test (DPT). The DPT is an indirect tensile test based on the configuration of double-punch test, named, Barcelona test that was developed for the systematic control of fiber reinforced concrete. DPT can be carried out by testing 150 × 150 mm concrete cylinders subjected to double punching test. Previous experimental results have ...

  7. Traffic-related air pollution, noise at school, and behavioral problems in Barcelona schoolchildren: a cross-sectional study.

    OpenAIRE

    Forns i Guzman, Joan, 1981-; Dadvand, Payam; Foraster Pulido, Maria, 1984-; ??lvarez Pedrerol, Mar; Rivas, Ioar; L??pez Vicente, M??nica; Suades Gonz??lez, Elisabet; Garc??a Esteban, Raquel; Esnaola, Mikel; Cirach, Marta; Grellier, James; Basaga??a Flores, Xavier; Querol, Xavier; Guxens, M??nica; Nieuwenhuijsen, Mark J.

    2016-01-01

    Background: The available evidence of the effects of air pollution and noise on behavioral development is limited, and it overlooks exposure at schools, where children spend a considerable amount of time. Objective: We aimed to investigate the associations of exposure to traffic-related air pollutants (TRAPs) and noise at school on behavioral development of schoolchildren. Methods: We evaluated children 7–11 years of age in Barcelona (Catalonia, Spain) during 2012–2013 within the BREATHE proj...

  8. Improved marketing communications of Creative Media Group S.L. towards the advertisers in the Barcelona Metropolitan magazine

    OpenAIRE

    Jumppanen, Veikko

    2009-01-01

    The objective of this thesis was to improve the marketing communications of a Barcelona-based publishing company towards its magazine advertiser clientele. The emerging downturn of the economy Spain experienced in 2008 created extra challenges for Creative Media Group to retain and develop customer relationships. The thesis discusses the research topic in the light of marketing communications, customer relationship management and print-media magazine adverting theory. Both quantitative an...

  9. Organization and management of building-site of central station on high-speed line Madrid-Barcelona French border.

    OpenAIRE

    Garcia Puig, Manel

    2009-01-01

    The thesis is about the organization and management of a construction site. The original project is the construction of the Central Station, high-speed line Madrid- Barcelona-French border. Because of the magnitude of the work, has been determined to split the building site into two phases. In a first phase, carrying out the works relating to access to the station and car park, in a second phase, the works related to the railway station and the platform. In the following ...

  10. Detection of mcr-1 colistin resistance gene in polyclonal Escherichia coli isolates in Barcelona, Spain, 2012 to 2015.

    Science.gov (United States)

    Prim, Núria; Rivera, Alba; Rodríguez-Navarro, Judith; Español, Montserrat; Turbau, Miquel; Coll, Pere; Mirelis, Beatriz

    2016-03-31

    Colistin resistance was detected in 53 of 10,011 Escherichia coli (0.5%) by prospective phenotypic testing of consecutive clinical isolates in a single hospital in Barcelona, Spain (2012-15). The mcr-1 gene was retrospectively identified by PCR and sequencing in 15 of 50 available isolates. Each isolate had a unique PFGE pattern except for two. This clonal diversity supports the hypothesis of horizontal dissemination of the mcr-1 gene in the local study population. PMID:27055477

  11. Delivery of psychological services to the U.S. Olympic team at the 1992 summer Olimpic Games: Barcelona, Spain

    OpenAIRE

    May, Jerry R.

    1992-01-01

    A description of the psychological services to the U.S. Olympic Team at the 1992 summer Olympic Games, Barcelona, Spain is provided. Services were based upon a crisis intervention model. Philosophy, preparation for games, criteria for psychologists selection, goals and objectives of psychological activities, range of services and intervention strategies are provided, as well as recommendations for the future. The U.S. Olympic team consisted of an excess of six hundred fifty male and female at...

  12. The burnout syndrome and associated personality disturbances. The study in three graduate programs in Dentistry at the University of Barcelona

    OpenAIRE

    Alemany Martínez, Aurelia; Berini Aytés, Leonardo; Gay Escoda, Cosme

    2008-01-01

    Objective: Determine the presence of"burnout" syndrome and characteristic personality patterns in the students and faculty of three graduate programs in Dentistry at the University of Barcelona: Department of Oral Surgery and Implantology, Department of Orthodontics and Department of Integrated Dentistry. Materials and Methods: The study was carried out in 78 dentists. The level of"burnout" was evaluated using the Maslach Burnout Inventory, socio-demographic variables and, finally, the person...

  13. The alignment of University curricula with the building of a Smart City: A case study from Barcelona

    OpenAIRE

    Grimaldri, Didier; Fernández Alarcón, Vicenç

    2016-01-01

    This paper argues the role of the University in the Smart City transformation strategy. The theoretical structure takes as reference the recent Complexity theory for city development and their application to the networks of the Connected city. The approach is based on a justified selection of Barcelona and its four universities. We carry out a deductive and interpretivist method interviewing 19 senior experts whole profiles represent the dif- ferent forces of the Triple Helix model. Our resul...

  14. The Geographic Information System techniques impact analyze of Office's Properties in Barcelona

    Science.gov (United States)

    Garcia, P. A.; Biere, R. A.; Moix, M. B.

    2007-05-01

    The changes in the characteristics and needs in the cities structures means new challenges in the space to the economics activities. The increasing predominance of the tertiary industry, of offices or I+D buildings, like an effect of the economic transformation implies new forms, new technical characteristics and similar alternatives locations accordant with a changing demand. The project that is presented here, is developed by the Centre of Land Policy and Valuations of the University Polytechnic of Catalonia for the company "Servicios de Geo-marketing Inmobiliario S.L.' (SGMI, Real State Geo- marketing Services S.L.) The process consists in the generation of a geographic information system to the analyses of the characteristics office's buildings of Barcelona in the sense to introduce the property office's buildings of Barcelona into a database for the geo-marketing. This application allows the access to the necessary information of technical and constructive characteristics of the office's buildings, summoned by the most emblematic or central locations to the best technical level in their constructions towards facilitating the maximum knowledge the citizen in order to assure the choice according to the needs for every profile of demand. The work has consisted basically in defining the technical criteria of evaluation of the building, to systematize those characteristics in some indicators (variable) capable of expressing the level of quality of every variable, to establish a system measurement of greater to smaller value explained to the quality. Systematizing the collection of information of a total of 683 buildings of Barcelona and of some municipalities of its periphery, through a visit to every building, to process the data obtained to a database and to standardize the value of quality for every indicator and set of indicators towards determining a final qualification, obtained from the different physical, constructive and qualitative characteristics of

  15. La casa de Bernat de Sarrià, canonge de la Seu de Barcelona, vers 1300

    Directory of Open Access Journals (Sweden)

    Batlle i Gallart, Carme

    1998-12-01

    Full Text Available This article studies the will and inventory of goods left by a rich canon, named Bernat of Sarria, who belonged to a noble family from the surroundings of Barcelona, where his house was built. The canon had a cousin —also named Bernat—, who was a king's counsellor and a very influential person at the court. The inventory is dated the day after the canon was dead, on the 26th July 1302. It contains a large number of clothes, furniture and coins, but neither books nor weapons. The canon also possessed several servants and three slaves, fourteen decorated silver cups, twelve rings and some landed properties in Premià and Alella (villages not far from Barcelona, that produced crops of wheat, barley, wine and oil. A benefice in memory of the date of his death was constituted, with his fortune, at Saint Michael's chapel of Barcelona cathedral. This benefice was devoted to the poor and especially to nourish, for ever, a poor person who was dependent of the cathedral's Almoina. The canon destined for these two pious institutions the amount he obtained of selling his slaves.[fr] Étude du testament et de l'inventaire des propriétés d'un riche chanoine. Bernat de Sarrià, appartenant à une famille de la petite noblesse des alentours de Barcelone, où se trouvait leur maison fortifiée. Un chevalier, cousin et avec le même nom du chanoine, était conseiller du roi et un grand personnage à la cour à cette époque. L'inventaire, daté du lendemain de la mort du chanoine, le 26 juillet 1302, est très riche en robes, meubles, monnaies, mais pas du tout en livres ou armes. Le chanoine possède trois esclaves, en plus des servants, catorze coupes d'argent, plus ou moins décorées avec des émaux et des incisions, une douzaine d'anneaux, et aussi des propriétés foncières à Premia et à Alella, sur la côte nord de Barcelone, d'où il tire le blé, l'orge, le vin et l'huile gardés dans son grenier et son cellier. Sa fortune est destinée à un b

  16. A Mediterranean case study of flood evolution: the Metropolitan Area of Barcelona

    Science.gov (United States)

    Llasat, Maria Carmen; Gilabert, Joan; Llasat-Botija, Montserrat; Cortès, Maria; Marcos, Raül; Martín-Vide, Juan Pedro; Turco, Marco; Falcón, Lluis

    2016-04-01

    Flood risk changes in Mediterranean Region integrate multiple factors, some of them related with the hazard (i.e. rainfall intensity), the vulnerability and exposure (i.e. population or assets), feedback processes that affect both hazard and vulnerability (i.e. urbanization of flood prone areas), mitigation and adaptation measures (i.e. rainwater tanks or early warning systems), and the available information used to estimate flood events (i.e. newspapers or gauged data). Flood events in the West Mediterranean region are usually produced as a consequence of very intense and local precipitation, mainly recorded on late summer and autumn that can give place to flash-floods in little torrential rivers (usually non-permanent flows) or urban floods. The Metropolitan Area of Barcelona (AMB), Spain, constitutes a good paradigm of a Mediterranean coast region, with strong urbanization of flood prone areas and high population density in an area crossed by numerous streams. The AMB is constituted by 36 municipalities with a total population above 3.200.000 inhabitants in an extension of 636 km². The major part of the population is concentrated between the Besós River and the Llobregat River, the Littoral Range and the Mediterranean Sea. Although both rivers have experienced catastrophic flood events (i.e. 25 September 1962, 815 deaths; 19-23 September 1971, 19 deaths; October 1987, 8 deaths), the most frequent situation is related with floods in non-permanent streams. Their main impacts are consequence of drainage and runoff problems and can affect both urban and rural areas. This contribution explores the evolution of land uses, population and precipitation from the middle of the 20th century until now, and how these changes have affected (or not), the flood risk. To do it, daily and sub-daily rainfall series, discharge series for the Llobregat and Besós Rivers, population data and land use changes have been analyzed. Future precipitation projections provided by an

  17. Continuous atmospheric boundary layer observations in the coastal urban area of Barcelona during SAPUSS

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    M. Pandolfi

    2013-05-01

    Full Text Available Continuous measurements of surface mixed layer (SML, decoupled residual/convective layer (DRCL and aerosol backscatter coefficient were performed within the Barcelona (Spain boundary layer from September to October 2010 (30 days in the framework of the SAPUSS (Solving Aerosol Problems by Using Synergistic Strategies field campaign. Two near-infrared ceilometers (Jenoptik CHM15K, vertically and horizontally probing (only vertical profiles are herein discussed, were deployed. Ceilometer-based DRCLs (1761 ± 363 m a.g.l. averaged over the campaign duration were twice as high as the mean SML (904 ± 273 m a.g.l.. Both DRCL and SML showed a marked SML diurnal cycle. Ceilometer data were compared with potential temperature profiles measured by daily radiosounding (twice a day, midnight and midday to interpret the boundary layer structure in the coastal urban area of Barcelona. The overall agreement (R2 = 0.80 between the ceilometer-retrieved and radiosounding-based SML heights (h revealed overestimation of the SML by the ceilometer (Δh=145 ± 145 m. After separating the data in accordance with different atmospheric scenarios, the lowest SML (736 ± 183 m and DRCL (1573 ± 428 m were recorded during warm North African (NAF advected air mass. By contrast, higher SML and DRCL were observed during stagnant Regional (REG (911 ± 234 m and 1769 ± 314 m, respectively and cold Atlantic (ATL (965 ± 222 m and 1878 ± 290 m, respectively air masses. In addition to being the lowest, the SML during the NAF scenario frequently showed a flat upper boundary throughout the day possibly because of the strong winds from the Mediterranean Sea limiting the midday SML convective growth. The mean backscatter coefficients were calculated at two selected heights representative of middle and top SML portions, i.e. β500 = 0.59 ± 0.45 Mm−1 sr−1 and β800 = 0.87 ± 0.68 Mm−1 sr−1 at 500 m and 800 m a.g.l., respectively. The highest backscatter coefficients were

  18. Long term effects of traffic noise on mortality in the city of Barcelona, 2004-2007.

    Science.gov (United States)

    Barceló, Maria Antònia; Varga, Diego; Tobias, Aurelio; Diaz, Julio; Linares, Cristina; Saez, Marc

    2016-05-01

    Numerous studies showing statistically significant associations between environmental noise and adverse health effects already exist for short-term (over one day at most) and long-term (over a year or more) noise exposure, both for morbidity and (albeit to a lesser extent) mortality. Recently, several studies have shown this association to be independent from confounders, mainly those of air pollutants. However, what has not been addressed is the problem of misalignment (i.e. the exposure data locations and health outcomes have different spatial locations). Without any explicit control of such misalignment inference is seriously compromised. Our objective is to assess the long-term effects of traffic noise on mortality in the city of Barcelona (Spain) during 2004-2007. We take into account the control of confounding, for both air pollution and socioeconomic factors at a contextual level and, in particular, we explicitly address the problem of misalignment. We employed a case-control design with individual data. We used deaths resulting from myocardial infarction, hypertension, or Type II diabetes mellitus in Barcelona between 2004 and 2007 as cases for the study, while for controls we used deaths (likewise in Barcelona and over the same period of time) resulting from AIDS or external causes (e.g. accidental falls, accidental poisoning by psychotropic drugs, drugs of abuse, suicide and self-harm, or injuries resulting from motor vehicle accidents). The controls were matched with the cases by sex and age. We used the annual average equivalent A-weighted sound pressure levels for daytime (7-21h), evening-time (21-23h) and night-time (23-7h), and controlled for the following confounders: i) air pollutants (NO2, PM10 and benzene), ii) material deprivation (at a census tract level) and iii) land use and other spatial variables. We explicitly controlled for heterogeneity (uneven distribution of both response and environmental exposures within an area), spatial dependency

  19. Anatomía de la dispersión urbana en Barcelona

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    Iván Muñiz

    2013-01-01

    Full Text Available No existe una definición comúnmente aceptada de dispersión urbana (urban sprawl, de modo que la investigación aplicada ha trabajado con diferentes indicadores que pretenden a su vez capturar los distintos significados con que se ha dotado al término. En este trabajo se mide cómo ha evolucionado la dispersión de la población y del empleo de la Región Metropolitana de Barcelona (RMB entre 1986 y 2001. Las dimensiones exploradas se dividen en dos grupos: i forma urbana (desconcentración, baja densidad y discontinuidad y ii estructura urbana. A diferencia de algunos trabajos donde el policentrismo y el crecimiento lineal se presentan como dos formas de dispersión, en nuestro caso contraponemos la idea de expansión urbana estructurada (lineal o policéntrica con la de expansión urbana desestructurada (amorfa, caótica o aleatoria, equiparando esta última con la cuarta dimensión de la dispersión. Los resultados obtenidos indican que la población y el empleo de la RMB se han descentralizado de forma desconcentrada y la densidad residencial se ha reducido. Sin embargo, la RMB no ha crecido de forma discontinua ni desestructurada, sino todo lo contrario.There is no commonly accepted definition of urban sprawl, and therefore applied research has worked with different indicators aiming to grasp the diverse meanings assigned to the term. This study measures how the dispersion of population and employment in the Barcelona Metropolitan Region (BMR developed between 1986 and 2001. The dimensions that were investigated are divided into two groups. The first one involves dimensions of urban form (decentralization, low density and discontinuity, and the second, of urban structure. As opposed to some studies, where polycentrism and linear growth are presented as two forms of sprawl, in our case we contrast the idea of structured urban expansion (linear or poly-centric with de structured urban expansion (amorphous, chaotic or random, identifying

  20. The ecodesign and planning of sustainable neighbourhoods: the Vallbona case study (Barcelona

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    Farreny, R.

    2011-10-01

    Full Text Available Global sustainability is increasingly an issue of urban sustainability, being essential to encourage more benign trajectories of urbanisation. For this, there is need for a framework that could aid in the process of designing and redesigning (retrofitting cities. The aim of this paper is to present and describe the methodology of urban ecodesign, which is characterized by a systematic incorporation of environmental life cycle considerations into the design of urban systems. The paper presents a case study of neighbourhood ecodesign from the city of Barcelona (Vallbona neighbourhood. This practical experience shows that the inclusion of sustainability criteria at an early stage of the design and planning of urban systems is the best strategy for environmental protection.In addition; a methodological framework is described in order to provide planners with a structured way of designing urban settlements so as to move towards sustainable urban environments.

    La sostenibilidad global es cada vez más un tema de sostenibilidad urbana. Por este motivo, es necesario un marco de trabajo que pueda ayudar en el proceso de diseño y rediseño (rehabilitación de nuestras ciudades. El objetivo de este trabajo es presentar y describir la metodología de ecodiseño adaptada a los entornos urbanos, la cual se caracteriza por la incorporación sistemática de las consideraciones ambientales a lo largo de su ciclo de vida. El documento presenta un caso de estudio de ecodiseño del barrio de Vallbona (Barcelona. Esta experiencia demuestra que la inclusión de criterios de sostenibilidad en las etapas iniciales de diseño y planificación de los sistemas urbanos es la mejor estrategia para la prevención ambiental. Además, se presenta un marco metodológico con el fin de proporcionar a los planificadores una forma estructurada de diseño de los asentamientos urbanos que les permita avanzar hacia entornos urbanos más sostenibles.

  1. Viaducto sobre el rio Llobregat de la Autopista Barcelona-Tarragona, España

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    Fernández Casado, C.

    1973-02-01

    Full Text Available Situated in the vicinity of Barcelona, over the LIobregat River, this viaduct bears two roadways 16 meters wide and 440 meters long. It is a continuous viaduct formed of 11 sections of 40-meter spans and S double T section beams placed 3.35 meters apart. The bridge supports are also of double T formation, with a 2.5 meters wide vertical octagonal stem and changing in depth from 2 to 0.7 meters at the edge. The lower footing is supported on 9 piles each 1 meter in diameter. The 80 t beams were prefabricated in the factory and later put in place using a movable formwork. The continuity between beams was made possible by reinforcement placed in the upper slab of the deck and the lower part of the beams. A detailed study has been made on the redistribution of bending moments by creep and shrinking.Situado en las proximidades de Barcelona, y sobre el río Llobregat, está formado por dos calzadas de 16 m de ancho y 440 m de longitud. Es un viaducto continuo que consta de 11 vanos de 40 m de luz, cada uno de los cuales se compone de cinco vigas sección doble T con separación entre ellas de 3,35 metros. Las pilas sobre las que reposa tienen también forma doble T con fuste vertical octogonal de 2,5 m de ancho, cabezal superior en transición poligonal, hasta el borde, variable de 2 a 0,7 m y zapata inferior que se apoya sobre 9 pilotes de 1 m de diámetro. Tanto las vigas como el cabezal de las pilas están pretensados con cables de 150 toneladas. Las vigas de 80 t de peso fueron prefabricadas en taller y colocadas en obra por medio de una cimbra de lanzamiento. La continuidad entre vigas se realizó por medio de armadura pasiva, colocada en la losa superior del tablero y en la parte inferior de las vigas. Se ha llevado a cabo un estudio detallado de la redistribución de momentos flectores por fluencia y retracción.

  2. SER BUEN DOCENTE ¿QUÉ OPINAN LOS ESTUDIANTES DE LA UNIVERSIDAD DE BARCELONA?

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    Rosa Sayós

    2014-07-01

    Full Text Available Abstract This study presents the opinion of the students of the University of Barcelona about the teaching skills that a good teacher should have. We conducted a survey through mobile devices among 1062 students in the first term of 2014. An Exploratory factor analysis (EFA gathers three main factors with eigenvalues greater than one, which explain 53.59% of variability: factor 1, methodology, teaching planning and good knowledge transmission; factor 2, interpersonal communication; factor 3, coordination of teaching team members. The reliability of the three factors is confirmed (α from .837 to .727. We did not observe significant differencesaccording to the area of knowledge and level of education for any teaching skill, although gender differences were detected in factors 1 and 2. Most students defined as good teaching qualities the following aspects: a reliable teaching plan, the use of appropriate teaching methods and having interpersonal skills. Outcomes showed significant coincidences by the comparison of the importance given by students and teachers to each teaching skill. The contributions of the students will be useful to redefine teaching skills and recognise indicators to assess teacher’s performance. Resumen Se presentan los resultados de una encuesta realizada entre los estudiantes de la Universidad de Barcelona (UB para conocer su opinión sobre las competencias que debería tener un buen docente. La encuesta se distribuyó a través de dispositivos móviles a un total de 1062 estudiantes. Un análisis factorial exploratorio (AFE agrupa los ítems de la encuesta en tres factores, con valores propios mayores que uno, que explican el 53.59% de la variabilidad: factor 1, metodología, planificación docente y buena transmisión de los contenidos; factor 2, comunicación interpersonal; factor 3, coordinación entre profesores. La fiabilidad de los tres factores es adecuada (α entre .837 y .727. No se observan diferencias estad

  3. El comercio de los inmigrantes en el centro histórico de Barcelona en 2004

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    Serra del Pozo, Pau

    2006-12-01

    Full Text Available In the last decade the increasing number of foreign immigrants in Catalonia has been especially apparent in the Ciutat Vella district of Barcelona, where immigrants’ shops have multiplied. The Ciutat Vella immigrant shops have several features such as small size, a long working day and the presence of employed relatives together with other employees of the same origin as that of the employer. The dominant typologies of the shops are: groceries, tele shops, money transfer (for remittances, basars (general stores, butcher’s shops, retail and wholesale textile shops, bars and restaurants. The dominant foreign entrepreneurs are Pakistanis, Indians, Chinese, Morrocans, Dominicans, Bangladeshis, Filipinos and Algerians. The work shows the geographical specialization by shop typology and geographical origin of the entrepreneurs, the concentration of the shops by zones and by streets and the spatial correlation between retail, residence and religious centres.

    En la última década el creciente número de inmigrantes extranjeros en Cataluña se ha hecho especialmente patente en el distrito de Ciutat Vella de Barcelona, donde han proliferado los comercios de este colectivo. Los comercios de los inmigrantes en este distrito se caracterizan por tener unas reducidas dimensiones, una jornada larga y por la presencia de familiares empleados y de otros empleados del mismo origen geográfico que el del titular del negocio. Las tipologías predominantes de los comercios son: colmados, locutorios, envíos de remesas, bazares, carnicerías, minoristas y mayoristas de ropa, bares y restaurantes. Los titulares extranjeros mayoritarios son pakistaníes, indios, chinos, marroquíes, dominicanos, bangladeshis, filipinos y argelinos. El trabajo muestra la especialización geográfica por tipo de comercio y origen geográfico de los empresarios, la concentración de comercios por zonas y por calles y la correlación espacial entre comercio, residencia y centros

  4. The disarticulated forms of neoliberal urbanism in the XXI century: the case of Barcelona Forum 2004

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    Angelino Mazza

    2012-12-01

    Full Text Available The contradictions within the policies of requalification of the City of Barcelona have become more evident in relation to some of the most recent urban transformations, as in the case of the project for the renewal of the Diagonal-Mar area; urban space where the Forum of Cultures 2004 has been held. The Forum turned into a failure, according to the paradigm of the criticisms, on the cultural and, above all, political (or marketing level; in its urban dimension, it has been the expression of the city that mires to the global insertion: it is a urban planning which is prevalently oriented to the external demand. The regeneration of the Diagonal-Mar has shown a scant consideration of social objectives, with the creation of spaces, where the concept of value of exchange predominates over the value of use. The actor (public and above all private investors, that participated to the redaction of the project of urban renewal of the area, produced a great propagandistic effort, presenting it as an open cultural initiative which can assume also the social criticisms.A lot of social and civil organization did not participate, and their proposals have not been accepted, and so, today, urban and social processes, rebound on the success or failure of the urban planning in an important area of the city. From that, what Borja (2005 defines the “urban malaise of Barcelona” starts, over the years of social and economic growth, the inhabitants of Barcelona fell a certain malaise, which is highlighted by the today’s crisis. The big urban projects do not generate any enthusiasm, citizens feel themselves progressively less owners of the own city, the architecture of the “great singular objects” does not represent the element of identity of the society. By scanning those urban imaginaries from a theoretical-conceptual viewpoint, which is formal and empiric, the question emerges, if the punctual urban planning operation of a sector could create evaluations

  5. Integrated Health Care Barcelona Esquerra (Ais-Be): A Global View of Organisational Development, Re-Engineering of Processes and Improvement of the Information Systems. The Role of the Tertiary University Hospital in the Transformation

    OpenAIRE

    Font, David; Escarrabill, Joan; Gómez, Mónica; Ruiz, Rafael; Enfedaque, Belén; Altimiras, Xavier

    2016-01-01

    The Integrated Health Area “Barcelona Esquerra” (Área Integral de Salud de Barcelona Esquerra – AIS-BE), which covers a population of 524,000 residents in Barcelona city, is running a project to improve healthcare quality and efficiency based on co-ordination between the different suppliers in its area through the participation of their professionals. Endowed with an Organisational Model that seeks decision-taking that starts out from clinical knowledge and from Information Systems tools that...

  6. Reactor building

    International Nuclear Information System (INIS)

    The whole reactor building is accommodated in a shaft and is sealed level with the earth's surface by a building ceiling, which provides protection against penetration due to external effects. The building ceiling is supported on walls of the reactor building, which line the shaft and transfer the vertical components of forces to the foundations. The thickness of the walls is designed to withstand horizontal pressure waves in the floor. The building ceiling has an opening above the reactor, which must be closed by cover plates. Operating equipment for the reactor can be situated above the building ceiling. (orig./HP)

  7. Heterogeneous reactors

    International Nuclear Information System (INIS)

    The microscopic study of a cell is meant for the determination of the infinite multiplication factor of the cell, which is given by the four factor formula: K(infinite) = n(epsilon)pf. The analysis of an homogeneous reactor is similar to that of an heterogeneous reactor, but each factor of the four factor formula can not be calculated by the formulas developed in the case of an homogeneous reactor. A great number of methods was developed for the calculation of heterogeneous reactors and some of them are discussed. (Author)

  8. Predictive optimal control of sewer networks using CORAL tool: application to Riera Blanca catchment in Barcelona.

    Science.gov (United States)

    Puig, V; Cembrano, G; Romera, J; Quevedo, J; Aznar, B; Ramón, G; Cabot, J

    2009-01-01

    This paper deals with the global control of the Riera Blanca catchment in the Barcelona sewer network using a predictive optimal control approach. This catchment has been modelled using a conceptual modelling approach based on decomposing the catchments in subcatchments and representing them as virtual tanks. This conceptual modelling approach allows real-time model calibration and control of the sewer network. The global control problem of the Riera Blanca catchment is solved using a optimal/predictive control algorithm. To implement the predictive optimal control of the Riera Blanca catchment, a software tool named CORAL is used. The on-line control is simulated by interfacing CORAL with a high fidelity simulator of sewer networks (MOUSE). CORAL interchanges readings from the limnimeters and gate commands with MOUSE as if it was connected with the real SCADA system. Finally, the global control results obtained using the predictive optimal control are presented and compared against the results obtained using current local control system. The results obtained using the global control are very satisfactory compared to those obtained using the local control. PMID:19700825

  9. [Contribution to the knowledge of intestinal protozoa infestation in the hospital population of Barcelona (author's transl)].

    Science.gov (United States)

    Portús, M; Prats, G

    1981-03-10

    This report concerns the analysis of 650 fecal samples submitted for parasitic investigation to the Microbiology Service of the Hospital de la Santa Creu i Sant Pau of Barcelona. The samples were analyzed by the technique of fixation and direct observation of Sapero and Lawless (MIFD), and with the biphasic concentration method of Blagg et al (MIFC). Intestinal protozoa were detected in 183 samples (28.2%), with a total of 232 protozoosis uncovered. The specific analysis gave the following results: Giardia lamblia, 10.9%; Dientamoeba fragilis, 7.8%; Entamoeba coli, 4.6%; Endolimax nana, 4.5%; Entamoeba hartmanni, 4.0%; Iodamoeba buetschlii, 2.9%; Entamoeba histolytica, 0.7%; Chilomastix mesnili, 0.2%; Trichomonas hominis, 0.2%. The results obtained by the two methods have been compared, observing the highest number of positive results with MIFD technique. Especial mention is made of the higher incidence of Dientamoeba fragilis in samples positive for Oxyuris further studies being needed to establish the basis for the relationship between both species of parasites. PMID:7206888

  10. SMOS validation using SSS data from Barcelona World Race and Argo profilers

    Science.gov (United States)

    Umbert, M.; Ballabrera, J.; Fernandez, P.; Salat, J.; Salvador, J.

    2012-04-01

    The organisers of the Barcelona World Race (BWR), the Institute of Marine Sciences (ICM-CSIC) and the Maritime Catalan Forum (FMC) agreed on equiping the FMC boat, participating in the race, with a SeaBird MiniCTD. The idea was for the first time to explore how such oceanic races could help to monitor surface temperature and salinity all around the world ocean in real time. The boat spent 112 days to complete the rond trip, sending 12-30 real-time samples/day via ARGOS satellites, using a transmitter developed at the ICM. Data was also stored in the instrument, at 192 samples/day to allow further final global analyses. In the SMOS (Soil Moisture and Ocean Salinity) satellite mission processing chain, sea surface salinity (SSS) values are retrieved from brightness temperature data at level 2 (L2). Global maps of SSS are being generated at level 3 (L3) using spatial and temporal weighted averages. Finally, improved representations of the SSS field are obtained at level 4 (L4) where satellite data is blended with data from other sensors. In the present study, validation of L2, L3 and L4 products using data from BWR and ARGO buoys is presented, covering the race period from January to April 2011. Differences between these two sets of data are also investigated as the uppermost robust measurements from Argo profilers have larger depths than the ones associated to the BWR boat.

  11. Diversity Management Among Small Shops in Barcelona: A Case of Community Intercultural Mediation

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    Mercé Zegrí

    2009-08-01

    Full Text Available The setting up of small shops by foreign people involves a number of difficulties and challenges with respect to how it fits in certain districts. These issues have been tackled from the view of intercultural mediation. This kind of intervention focuses on relationships and communication among shopkeepers by highlighting their common interests. Intervention also includes making associative networks acknowledge and adapt to new realities. This paper describes a process of intervention focused on community intercultural mediation carried out in small shops in a district of Barcelona. First, most significant results of the diagnosis stage are shown concerning the speech and relationships of main agents along with “conflict” analysis. Then a detailed mediation intervention is described that was carried out with a group of shopkeepers called “shop promoting group”. Finally, bearing in mind their high participative and transformational potential, some general appraisals are made with respect to the impact of this type of processes and their continuity and sustainability.

  12. PREFACE: Proceedings of the 7th International LISA Symposium, Barcelona, Spain, 16-20 June 2008

    Science.gov (United States)

    Lobo, Alberto; Sopuerta, Carlos F.

    2009-07-01

    In June 2006 the LISA International Science Team (LIST) accepted the bid presented by the Institut d'Estudis Espacials de Catalunya (IEEC) to host the 7th International LISA Symposium. This was during its 11th meeting at the University of Maryland, just before the 6th edition of the Symposium started in NASA's Goddard Space Flight Center. The 7th International LISA Symposium took place at the city of Barcelona, Spain, from 16-20 June 2008, in the premises of CosmoCaixa, a modern Science Museum located in the hills near Tibidabo. Almost 240 delegates registered for the event, a record breaking figure compared to previous editions of the Symposium. Many of the most renowned world experts in LISA, Gravitational Wave Science, and Astronomy, as well as Engineers, attended LISA 7 and produced state-of-the-art presentations, while everybody benefited from the opportunity to have live discussions during the week in a friendly environment. The programme included 31 invited plenary lectures in the mornings, and 8 parallel sessions in the afternoons. These were classified into 7 major areas of research: LISA Technology, LISA PathFinder, LISA PathFinder Data Analysis, LISA Data Analysis, Gravitational Wave sources, Cosmology and Fundamental Physics with LISA and Other Gravitational Wave Detectors. 138 abstracts for communications were received, of which a selection was made by the session convenors which would fit time constraints. Up to 63 posters completed the scientific programme. More details on the programme, including some of the talks, can be found at the Symposium website: http://www.ice.cat/research/LISA_Symposium. There was however a remarkable add-on: Professor Clifford Will delivered a startling presentation to the general public, who completely filled the Auditori—the main Conference Room, 320 seats—and were invited to ask questions to the speaker who had boldly guided them through the daunting world of Black Holes, Waves of Gravity, and other Warped Ideas of

  13. Community health workers improve contact tracing among immigrants with tuberculosis in Barcelona

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    Ospina Jesús

    2012-03-01

    Full Text Available Abstract Background The important increase in immigration during recent years has changed the epidemiology and control strategies for tuberculosis (TB in many places. This study evaluates the effectiveness of intervention with community health workers (CHW to improve contact tracing among immigrants. Methods The study included all TB cases detected by the Barcelona TB Program from 2000 to 2005 and compared a period without CHW intervention (2000-2002 to a period with CHW intervention (2003-2005. The influence on contact tracing of sex, age, hospital of diagnosis, district of residence, birthplace, HIV, homeless and CHW intervention was analysed by logistic regression. Odds ratio (OR and 95% confidence intervals (CI were calculated. Results 960 foreign born TB cases were detected, 388 in the intervention period. Contact tracing was performed on 65,7% of 201 smear-positive cases during the pre-intervention period compared to 81.6% of 152 smear-positive TB cases during the intervention period (p Conclusions The effectiveness of contact tracing for TB control in areas with high immigration can be improved by incorporating CHWs who act as translators, cultural mediators and facilitators who accompany cases and contacts through treatment and follow-up.

  14. La satisfacción de los clientes de los centros deportivos municipales de Barcelona

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    Amal Elasri Ejjaberi

    2015-03-01

    Full Text Available El objetivo de este trabajo es identificar y analizar las variables que más influyen en la satisfacción del cliente en los centros deportivos de Barcelona. Los datos fueron recogidos en una encuesta entre los clientes actuales de centros deportivos municipales. Un análisis factorial aplicado a esta información revela cinco dimensiones que subyacen a los múltiples componentes de la oferta de servicios en dichas instalaciones: su calidad, los recursos humanos, la comunicación, el entorno social y la relación calidad-precio. Las variables generadas fueron incorporadas a un modelo de regresión múltiple en el que la variable dependiente fue la satisfacción del cliente. De acuerdo con los resultados las mujeres y los usuarios mayores de 60 años valoran más positivamente el servicio recibido, mientras que a mayor nivel de estudios, más exigentes son los clientes. Finalmente, un gerente debe prestar atención en primer lugar a la calidad de las instalaciones seguido de la comunicación, los recursos humanos, la relación calidad precio y el entorno social, por este orden.

  15. Hola!Barcelona!Hola!3GSM!3GSM World Congress 2006记行

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    2006年2月13日~16日,全球移动通信业界一年一度最大的盛会3GSM World Congress 2006(以下简称3G大会)在西班牙巴塞罗那隆重召开。在过去,我们只能从网上方方面面的报道,去领略这个对于全球移动通信业具有非比寻常意义的大会,而在2006年,《新潮电子》记者得到了亲赴这一盛典的机会,从而为各位关注移动通信的朋友们带来最具临场感的第一手报道。站在会场前的广场上,面对气势宏伟的展厅,我们由衷地从心中发出一声呼喊:“Hola!Barcelona!Hola!3GSM!”(Hola为西班牙文,意即英文的Hello)。

  16. Sustainability Commitment, New Competitors’ Presence, and Hotel Performance: The Hotel Industry in Barcelona

    Directory of Open Access Journals (Sweden)

    Juan Pedro Aznar

    2016-08-01

    Full Text Available The hospitality industry is facing major challenges, among them the new competition from novel forms of supply in the sharing economy. Airbnb, Homeaway, and Niumba, among other websites offering accommodations, are having an important impact in the sector, changing existing conditions and the market for the traditional hospitality industry. In this context, a strategy based in differentiation can help to prevent drops in revenues and profitability. The main objective of this paper is analyse if commitment towards sustainability has a positive impact on financial performance and can be considered a positive strategy in this new environment. The empirical data refer to a sample of hotels in Barcelona, one of the most important tourist cities in Europe. Our results suggest that there is no clear relationship between sustainability and better financial performance; however, sustainability commitment is associated with a minimum size, which can also have positive effects in terms of economies of scale and finally affect profitability. Hotels more committed to environmental issues are located in areas with a lower density of Airbnb apartments, and this geographical distribution can be more positive than a situation of massive tourist concentration in specific areas with negative externalities for neighbours.

  17. Urban air quality comparison for bus, tram, subway and pedestrian commutes in Barcelona.

    Science.gov (United States)

    Moreno, Teresa; Reche, Cristina; Rivas, Ioar; Cruz Minguillón, Maria; Martins, Vânia; Vargas, Concepción; Buonanno, Giorgio; Parga, Jesus; Pandolfi, Marco; Brines, Mariola; Ealo, Marina; Sofia Fonseca, Ana; Amato, Fulvio; Sosa, Garay; Capdevila, Marta; de Miguel, Eladio; Querol, Xavier; Gibbons, Wes

    2015-10-01

    Access to detailed comparisons in air quality variations encountered when commuting through a city offers the urban traveller more informed choice on how to minimise personal exposure to inhalable pollutants. In this study we report on an experiment designed to compare atmospheric contaminants inhaled during bus, subway train, tram and walking journeys through the city of Barcelona. Average number concentrations of particles 10-300 nm in size, N, are lowest in the commute using subway trains (N5.0×10(4) cm(-3)), with extreme transient peaks at busy traffic crossings commonly exceeding 1.0×10(5) cm(-3) and accompanied by peaks in Black Carbon and CO. Subway particles are coarser (mode 90 nm) than in buses, trams or outdoors (1200 ppm in crowded buses and trains. There are also striking differences in inhalable particle chemistry depending on the route chosen, ranging from aluminosiliceous at roadsides and near pavement works, ferruginous with enhanced Mn, Co, Zn, Sr and Ba in the subway environment, and higher levels of Sb and Cu inside the bus. We graphically display such chemical variations using a ternary diagram to emphasise how "air quality" in the city involves a consideration of both physical and chemical parameters, and is not simply a question of measuring particle number or mass. PMID:26277386

  18. Urban aerosol size distributions over the Mediterranean city of Barcelona, NE Spain

    Directory of Open Access Journals (Sweden)

    M. Dall'Osto

    2012-11-01

    Full Text Available Differential mobility particle sizer (DMPS aerosol concentrations (N13-800 were collected over a one-year-period (2004 at an urban background site in Barcelona, North-Eastern Spain. Quantitative contributions to particle number concentrations of the nucleation (33–39%, Aitken (39–49% and accumulation mode (18–22% were estimated. We examined the source and time variability of atmospheric aerosol particles by using both K-means clustering and Positive Matrix Factorization (PMF analysis. Performing clustering analysis on hourly size distributions, nine K-means DMPS clusters were identified and, by directional association, diurnal variation and relationship to meteorological and pollution variables, four typical aerosol size distribution scenarios were identified: traffic (69% of the time, dilution (15% of the time, summer background conditions (4% of the time and regional pollution (12% of the time. According to the results of PMF, vehicle exhausts are estimated to contribute at least to 62–66% of the total particle number concentration, with a slightly higher proportion distributed towards the nucleation mode (34% relative to the Aitken mode (28–32%. Photochemically induced nucleation particles make only a small contribution to the total particle number concentration (2–3% of the total, although only particles larger than 13 nm were considered in this study. Overall the combination of the two statistical methods is successful at separating components and quantifying relative contributions to the particle number population.

  19. Urban aerosol size distributions over the Mediterranean city of Barcelona, NE Spain

    Directory of Open Access Journals (Sweden)

    M. Dall'Osto

    2012-07-01

    Full Text Available Differential mobility particle sizer (DMPS aerosol concentrations (N13–800 were collected over a one-year-period (2004 at an urban background site in Barcelona, North-Eastern Spain. Quantitative contributions to particle number concentrations of the nucleation (33–38%, Aitken (39–49% and accumulation mode (18–22% were estimated. We examined the source and time variability of atmospheric aerosol particles by using both K-means clustering and Positive Matrix Factorization (PMF analysis. Performing clustering analysis on hourly size distributions, nine K-means DMPS clusters were identified and, by directional association, diurnal variation and relationship to meteorological and pollution variables, four typical aerosol size distribution scenarios were identified: traffic (69% of the time, dilution (15% of the time, summer background conditions (4% of the time and regional pollution (12% of the time. According to the results of PMF, vehicle exhausts are estimated to contribute at least to 62–66% of the total particle number concentration, with a slightly higher proportion distributed towards the nucleation mode (34% relative to the Aitken mode (28–32%. Photochemically induced nucleation particles make only a small contribution to the total particle number concentration (2–3% of the total, although only particles larger than 13 nm were considered in this study. Overall the combination of the two statistical methods is successful at separating components and quantifying relative contributions to the particle number population.

  20. Plasma reactor

    OpenAIRE

    Molina Mansilla, Ricardo; Erra Serrabasa, Pilar; Bertrán Serra, Enric

    2008-01-01

    [EN] A plasma reactor that can operate in a wide pressure range, from vacuum and low pressures to atmospheric pressure and higher pressures. The plasma reactor is also able to regulate other important settings and can be used for processing a wide range of different samples, such as relatively large samples or samples with rough surfaces.

  1. Reactor physics

    International Nuclear Information System (INIS)

    Progress in research on reactor physics in 1997 at the Belgian Nuclear Research Centre SCK/CEN is described. Activities in the following four domains are discussed: core physics, ex-core neutron transport, experiments in Materials Testing Reactors, international benchmarks

  2. Negative mood states and related factors in a sample of adolescent secondary-school students in Barcelona (Spain) Estados de ánimo negativos y los factores relacionados en una muestra de adolescentes de enseñanza secundaria de Barcelona

    OpenAIRE

    Ahonen, Emily Q; Manel Nebot; Emmanuel Giménez

    2007-01-01

    Introduction: Poor mental health is a common problem in adolescence. Little information is available, however, about the factors influencing negative mood states in otherwise healthy adolescents. We aimed to describe the mood states and related factors in a sample of adolescents in the city of Barcelona (Spain). Methods: We administered a health survey to a sample of 2,727 students from public, subsidized, and private schools in Barcelona, aged approximately 14, 16, and 18 years old. To analy...

  3. Vertical and horizontal variability of PM10 source contributions in Barcelona during SAPUSS

    Science.gov (United States)

    Brines, M.; Dall'Osto, M.; Amato, F.; Minguillón, M. C.; Karanasiou, A.; Alastuey, A.; Querol, X.

    2015-11-01

    During the SAPUSS campaign (Solving Aerosol Problems by Using Synergistic Strategies) PM10 samples at twelve hours resolution were simultaneously collected at four monitoring sites located in the urban agglomerate of Barcelona (Spain). A total of 221 samples were collected from 20 September to 20 October 2010. The Road Site (RS) site and the Urban Background (UB) site were located at street level, whereas the Torre Mapfre (TM) and the Torre Collserola (TC) sites were located at 150 m a.s.l. by the sea side within the urban area and at 415 m a.s.l. 8 km inland, respectively. For the first time, we are able to report simultaneous PM10 aerosol measurements allowing us to study aerosol gradients at both horizontal and vertical levels. The complete chemical composition of PM10 was determined on the 221 samples, and factor analysis (Positive Matrix Factorisation, PMF) was applied. This resulted in eight factors which were attributed to eight main aerosol sources affecting PM10 concentrations in the studied urban environment: (1) vehicle exhaust and wear (2-9 μg m-3, 10-27 % of PM10 mass on average), (2) road dust (2-4 μg m-3, 8-12 %), (3) mineral dust (5 μg m-3, 13-26 %), (4) aged marine (3-5 μg m-3, 13-20 %), (5) heavy oil (0.4-0.6 μg m-3, 2 %), (6) industrial (1 μg m-3, 3-5 %), (7) sulphate (3-4 μg m-3, 11-17 %) and (8) nitrate (4-6 μg m-3, 17-21 %). Three aerosol sources were found enhanced at the ground levels (confined within the urban ground levels of the city) relative to the upper levels: (1) vehicle exhaust and wear (2.8 higher), (2) road dust (1.8 higher) and (3) local urban industries/crafts workshops (1.6 higher). Surprisingly, the other aerosol sources were relatively homogeneous at both horizontal and vertical levels. However, air mass origin and meteorological parameters also played a key role in influencing the variability of the factors concentrations. The mineral dust and aged marine factors were found to be a mixture of natural and

  4. Monitoring Sea Level by Tide Gauges and GPS at Barcelona and Estartit Harbours

    Science.gov (United States)

    Martinez Benjamin, J. J.; Gili, J.; Lopez, R.; Tapia, A.; Bosch, E.; Perez, B.; Pros, F.

    2012-04-01

    Sea level is an environmental variable which is widely recognised as being important in many scientific disciplines as a control parameter for coastal dynamical processes or climate processes in the coupled atmosphere-ocean systems, as well as engineering applications. A major source of sea-level data are the national networks of coastal tide gauges, in Spain belonging to different institutions as the Instituto Geográfico Nacional (IGN), Puertos del Estado (PE), Instituto Hidrográfico de la Marina (IHM), etc. The tide gauge of l'Estartit is a traditional floating gauge placed 21 years ago and has an accuracy of ± 2 mm. Since 1996, l'Estartit tide gauge has been co-located with geodetic techniques (GPS measurements of XU, Utilitary Network, and XdA, Levelling Network,) and it is tied to the SPGIC (Integrated Geodetic Positioning System of Catalonia) project of the Cartographic Institute of Catalunya (ICC). In 2006, due to the work for the expansion of the harbour, the tide gauge had to be moved. Before the work started, appropiate GPS measurements were carried out in order to ensure the connection of the tide gauge data. During October 2006 and May 2008, the tide gauge was inactive and it has been moved on to a new location inside the harbour. In June 2008, new GPS and levelling measures have been done in order to tie the new location into SPGIC project and to co-locate old data respect the new one. Although l'Estartit does not have a GPS permanent station, it is possible to build a virtual one from the service "CATNET web" of the ICC. "CATNET web" is a data distribution system of a virtual GPS permanent station via web. From the coordinates where you want to place the virtual station, the time interval and the measurement rate, the system generates a RINEX file under the requested conditions. At Barcelona harbour there is one MIROS radar tide gauge belonging to Puertos del Estado (Spanish Harbours). It is placed at the dock 140 of the ENAGAS Building.The radar

  5. Vertical and horizontal variability of PM10 source contributions in Barcelona during SAPUSS

    Science.gov (United States)

    Brines, Mariola; Dall'Osto, Manuel; Amato, Fulvio; Cruz Minguillón, María; Karanasiou, Angeliki; Alastuey, Andrés; Querol, Xavier

    2016-06-01

    During the SAPUSS campaign (Solving Aerosol Problems by Using Synergistic Strategies) PM10 samples at 12-hour resolution were simultaneously collected at four monitoring sites located in the urban agglomerate of Barcelona (Spain). A total of 221 samples were collected from 20 September to 20 October 2010. The Road Site (RS) site and the Urban Background (UB) site were located at street level, whereas the Torre Mapfre (TM) and the Torre Collserola (TC) sites were located at 150 m a.s.l. by the sea side within the urban area and at 415 m a.s.l. 8 km inland, respectively. For the first time, we are able to report simultaneous PM10 aerosol measurements, allowing us to study aerosol gradients at both horizontal and vertical levels. The complete chemical composition of PM10 was determined on the 221 samples, and factor analysis (positive matrix factorisation, PMF) was applied. This resulted in eight factors which were attributed to eight main aerosol sources affecting PM10 concentrations in the studied urban environment: (1) vehicle exhaust and wear (2-9 µg m-3, 10-27 % of PM10 mass on average), (2) road dust (2-4 µg m-3, 8-12 %), (3) mineral dust (5 µg m-3, 13-26 %), (4) aged marine (3-5 µg m-3, 13-20 %), (5) heavy oil (0.4-0.6 µg m-3, 2 %), (6) industrial (1 µg m-3, 3-5 %), (7) sulfate (3-4 µg m-3, 11-17 %) and (8) nitrate (4-6 µg m-3, 17-21 %). Three aerosol sources were found to be enhanced at the ground levels (confined within the urban ground levels of the city) relative to the upper levels: (1) vehicle exhaust and wear (2.8 higher), (2) road dust (1.8 higher) and (3) local urban industries/crafts workshops (1.6 higher). Surprisingly, the other aerosol sources were relatively homogeneous at both horizontal and vertical levels. However, air mass origin and meteorological parameters also played a key role in influencing the variability of the factor concentrations. The mineral dust and aged marine factors were found to be a mixture of natural and

  6. Continuous atmospheric boundary layer observations in the coastal urban area of Barcelona, Spain

    Directory of Open Access Journals (Sweden)

    M. Pandolfi

    2013-01-01

    Full Text Available Continuous measurements of Surface Mixed Layer (SML, Decoupled Residual/Convective Layer (DRCL and aerosol backscatter coefficient were performed within the Barcelona (NE Spain boundary layer from September to October 2010 (30 days in the framework of the SAPUSS (Solving Aerosol Problems Using Synergistic Strategies field campaign. Two near-infrared ceilometers (Jenoptik CHM15K vertically and horizontally-probing (only vertical profiles are discussed were deployed during SAPUSS and compared with potential temperature profiles measured by daily radiosounding (midnight and midday to interpret the boundary layer structure in the urban area of Barcelona. Ceilometer-based DRCL (1761±363 m a.g.l. averaged over the campaign duration were twice as high as the mean SML (904±273 m a.g.l. with a marked SML diurnal cycle. The overall agreement between the ceilometer-retrieved and radiosounding-based SML heights (R2=0.8 revealed overestimation of the SML by the ceilometer (Δh=145±145 m. After separating the data in accordance with different atmospheric scenarios, the lowest SML (736±183 m and DRCL (1573±428 m were recorded during warm North African (NAF advected air mass. By contrast, higher SML and DRCL were observed during stagnant regional (REG (911±234 m and 1769±314 m, respectively and cold Atlantic (ATL (965±222 m and 1878±290 m, respectively air masses. The SML during the NAF scenario frequently showed a flat upper boundary throughout the day because of strong winds from the Mediterranean Sea that limit the midday SML convective growth observed during ATL and REG scenarios. The mean backscatter coefficients were calculated at two selected heights as representative of middle and top SML portions, i.e. β500=0.59±0.45 M m−1 sr−1 and β800=0.87±0.68 M m−1 sr−1 at 500 m and 800 m a.g.l., respectively. The highest backscatter coefficients were

  7. GPR velocity and frequency analysis in industrial archaeology. Study of the EUETIB buildings (Barcelona, Sapin)

    Science.gov (United States)

    Pérez Gracia, V.; González Drigo, R.; Vendrell, D.

    2003-04-01

    The Ground-penetrating radar (GPR) analysis of some modernist buildings of the Technical Industrial School of Barcelona allow us to obtain valuable information of the underground constructions, corresponding to ancient structures of the preceding factory. The actual school is building on the modernist industrial complex. Many changes in the structure were carried out to adapt the structure to its actual use. The obtained GPR data was compared with the information, documents and photographies from the historical archives of the Diputación of Barcelona (Spain). To obtain accurate results and right interpretations, velocity analysis is performed in the different studied areas. The velocity values are used to convert accurately the two-way travel time into depth. The aim of those velocity estimations is obtain the minimum error in the final interpretations of the profiles. The velocity analysis is carried out using two different methods: calculating velocity using the reflection in anomalous bodies into the medium at a known depth, and calculating velocity from the hyperbolic events of the radargrams, caused by finite anomalies of the medium. The present tubes and conductions which are in use nowadays, have known depths. Then, velocity is obtained from the two-way travel time obtained for the reflected wave in that anomalous body. This method allow us to known velocities in areas where those elements are presented, which are mainly in the ground under the streets of the school. The reflection produced in unknown bodies which have finite dimensions, is obtained as an hyperbolic event. The averaged velocity of the medium over these bodies is calculated from the equation of the hyperbola. This method was used mainly where known elements were not presents in the ground. These areas are mainly the buildings of the school. Experimental velocities are understand as the averaged velocity of ray-path. The obtained values are applied to each area, to calculate depths of the

  8. Barcelona, 1938 : una ciutat ocupada musicalment. Ponència llegida al Congrés Barcelona, 1938. Capital de tres governs. Política i cultura, organitzat per la Fundació Pi i Sunyer

    OpenAIRE

    Calmell, Cèsar

    2007-01-01

    El autor de este artículo explica detalladamente la insólita visión de una Barcelona desencantada y con sentimiento de pérdida, abocada al final de la guerra civil y, curiosamente, arrastrada a una extrema inflorescencia cultural en el campo de la música, llevada a cabo por las autoridades de la Repúbica en la primavera de 1938; se trata de «/…/ un relato construído /…/ a espaldas de la cruda realidad vivida en el frente», con el fin de reconducir el público hacia la normalidad y de mantener ...

  9. Estudio del comportamiento alimentario en escolares de 11 a 13 años de Barcelona Study on feeding behavior in school children aged 11-13 years from Barcelona

    OpenAIRE

    M. Castells Cuixart; C. Capdevila Prim; T. Girbau Solà; C. Rodríguez Caba

    2006-01-01

    Objetivo: Conocer el entorno familiar, hábitos cotidianos y características sociales que pueden influir en la alimentación de los escolares de 11 a 13 años. Metodología: Estudio descriptivo transversal realizado en 65 escuelas de la provincia de Barcelona, durante el segundo trimestre del 2000, obteniendo una muestra de 2.354 escolares encuestados por 73 farmacéuticos. El cuestionario está compuesto por 39 preguntas referentes al entorno familiar, hábitos alimentarios y de estilo de vida como...

  10. Du Modernisme à Joan Miró : la culture urbaine à Barcelone From Modernism to Joan Miró: Barcelona and Urban Culture Del modernismo a Joan Miró: la cultura urbana en Barcelona

    Directory of Open Access Journals (Sweden)

    Georges Serra

    1996-05-01

    Full Text Available La ville est une langue, écrit Barthes. Le langage architectural et urbaniste de Barcelone présente une recherche d'identité culturelle qui refuse toute forme d'imitation et trouve son expression dans le passé catalan et/ou l'imaginaire méditerranéen. Son objectif est la mise en valeur de la catalanité en dépit des modes de standardisation introduits par le nouvel ordre économique mondial. La recherche identitaire se nourrit de l'image littéraire de la ville, de son image dans l'art et dans les aspects les plus novateurs de la création urbaine contemporaine.The town is a language, Roland Barthes wrote. The architectural and urbanistic language of Barcelona is that of a search for a cultural identity. It refuses only kind of imitation, and finds the elements of its expression in the Catalan past and/or Mediterranean imagery. Its objective is to emphasize Catalanity in spite of the standardization trends introduced by the new global economy. The search for an identity crops up in the literary image of Barcelona, in art, and in the most daring aspects of contemporary urban creations.La ciudad es un lenguaje, escribía Roland Barthes. El lenguaje arquitectural y urbanístico de Barcelona es el de la búsqueda de una cultura propia. Además de negarse a cualquiera imitación, saca del pasado catalán, y/o del mundo imaginario mediterráneo, los elementos de su expresión. El objetivo no es otro que afirmar la catalanidad y ello a pesar de las tentaciones de uniformización a las que induce el nuevo orden económico mundial. Esta búsqueda de una identidad vuelve a encontrarse en la imagen literaria de Barcelona, en las artes plásticas, y en los aspectos más descabellados de la creación urbana contemporánea.

  11. El tabaco en los establecimientos de restauración y hostelería: estudio observacional en Barcelona, 2008 Smoking in the hospitality sector: an observational study in Barcelona (Spain), 2008

    OpenAIRE

    Joan R. Villalbí; Lucía Baranda; M. José López; Manel Nebot

    2010-01-01

    Objetivos: Describir la situación real del consumo de tabaco en los locales de restauración y hostelería tras la ley de medidas sanitarias frente al tabaquismo, que establece exenciones en este sector a la prohibición general de fumar en el trabajo desde 2006. Métodos Estudio observacional descriptivo en Barcelona en 2008, con muestreo por conglomerados de 1130 establecimientos. Se presentan los resultados estratificados por tipo de establecimiento. Resultados: En el 85,7% de los comercios co...

  12. Consumo de cannabis en los estudiantes de secundaria de Barcelona: inicio en el consumo, efectos experimentados y expectativas Cannabis consumption among secondary school pupils of Barcelona [Spain]: initial use, reported effects and expectancies

    Directory of Open Access Journals (Sweden)

    Eva Morales

    2008-08-01

    Full Text Available Objetivos: Describir las circunstancias del inicio del consumo, las razones para hacerlo, los efectos experimentados y las expectativas relacionadas con el consumo de cannabis en adolescentes de Barcelona. Métodos: Encuesta transversal realizada a una muestra de escolares de 3.º de ESO en 2005. El cuestionario era confidencial y autocumplimentado. Se dispone de datos de 2.043 alumnos de 47 centros escolares de Barcelona. Resultados: El 37,5% de los escolares declaró haber probado el cannabis, de los cuales un 10% lo hizo en el último mes. El consumo fue superior en centros públicos que en concertados-privados (p Objectives: To describe the circumstances of initial use of Cannabis, as well as the reasons for consumption, reported effects and expectations related to cannabis use, among adolescents in Barcelona. Methods: A cross-sectional survey was conducted in a sample of pupils in the third year of compulsory secondary education in 2005. The questionnaire was confidential and self-completed. Data were gathered from 2,043 secondary school pupils from 47 schools in Barcelona. Results: A total of 37.5% of students reported cannabis consumption at some time, and 10.0% of these students had used cannabis in the previous month. Cannabis use was more common in public schools than in subsidized or private schools (p < 0.001. More than half the adolescents (60.3% smoked cannabis for the first time in parks or on the street. Most (88.4% of the adolescents obtained cannabis from a classmate or friend and 92.3% did so without paying for it. The main reason for initial consumption was curiosity, and reasons for continuing use were a desire to feel better and to forget problems. The most frequently reported effects were memory loss, sadness and difficulties in studying or working. Cannabis use was positively related to the expectation that the drug induces relaxation and aids social and sexual relations, and negatively to the beliefs that the drug can

  13. Insomniac children maternal sleep and mood in São Paulo and Barcelona Sono e humor de mães de crianças pequenas com insônia em São Paulo e Barcelona

    Directory of Open Access Journals (Sweden)

    Eduardina Tenenbojm

    2008-09-01

    Full Text Available OBJECTIVE: To evaluate sleep characteristics verifying for the presence of depressive symptoms in mothers of insomniac children living in São Paulo (Brazil and Barcelona (Spain. METHOD: Forty-six mothers were evaluated, 37 from São Paulo and nine from Barcelona, their ages varying from 19 to 44, and their children; otherwise healthy but with complaints of insomnia, their age varying from three to 33 months. The mothers' sleep quality was rated by the Pittsburgh Sleep Quality Index (PSQI, and the Beck Depression Inventory (BDI. RESULTS: 91.30% of mothers reported poor sleep by PSQI standards. Regarding signs and symptoms of depression, 69.56% of all mothers in this sample showed them. Direct correlation between São Paulo mothers PSQI and BDI was found and also between the child's age and BDI. CONCLUSION: The mothers' poor sleep was related to mood changes with symptoms of depression presenting similar results in both cities.OBJETIVO: Avaliar a presença de sintomas depressivos em mães de crianças com insônia em São Paulo e Barcelona. MÉTODO: Quarenta e seis mães foram avaliadas, 37 de São Paulo e nove de Barcelona, suas idades variaram de 19 a 44 anos, e suas crianças, saudáveis, mas com queixa de insônia tinham idades de três a 33 meses. A mãe foi avaliada pelo Índice de Qualidade de Sono de Pittsburgh (PSQI e pelo Índice de Depressão de Beck (IDB. RESULTADOS: 91,30% das mães relataram sono ruim pelo padrão do PSQI. Quanto aos sinais e sintomas de depressão, 69,56% das mães da amostra total relatavam. Nas mães de São Paulo foi constatada correlação direta entre o PSQI e o IDB, bem como a idade da criança e o IBD. CONCLUSÃO: O sono ruim das mães se correlacionou com sinais e sintomas depressivos e os resultados foram semelhantes nas duas cidades.

  14. Compact Reactor

    International Nuclear Information System (INIS)

    Weyl's Gauge Principle of 1929 has been used to establish Weyl's Quantum Principle (WQP) that requires that the Weyl scale factor should be unity. It has been shown that the WQP requires the following: quantum mechanics must be used to determine system states; the electrostatic potential must be non-singular and quantified; interactions between particles with different electric charges (i.e. electron and proton) do not obey Newton's Third Law at sub-nuclear separations, and nuclear particles may be much different than expected using the standard model. The above WQP requirements lead to a potential fusion reactor wherein deuterium nuclei are preferentially fused into helium nuclei. Because the deuterium nuclei are preferentially fused into helium nuclei at temperatures and energies lower than specified by the standard model there is no harmful radiation as a byproduct of this fusion process. Therefore, a reactor using this reaction does not need any shielding to contain such radiation. The energy released from each reaction and the absence of shielding makes the deuterium-plus-deuterium-to-helium (DDH) reactor very compact when compared to other reactors, both fission and fusion types. Moreover, the potential energy output per reactor weight and the absence of harmful radiation makes the DDH reactor an ideal candidate for space power. The logic is summarized by which the WQP requires the above conditions that make the prediction of DDH possible. The details of the DDH reaction will be presented along with the specifics of why the DDH reactor may be made to cause two deuterium nuclei to preferentially fuse to a helium nucleus. The presentation will also indicate the calculations needed to predict the reactor temperature as a function of fuel loading, reactor size, and desired output and will include the progress achieved to date

  15. Adjuvant sorafenib after heptectomy for Barcelona Clinic Liver Cancer-stage C hepatocellular carcinoma patients

    Science.gov (United States)

    Xia, Feng; Wu, Li-Li; Lau, Wan-Yee; Huan, Hong-Bo; Wen, Xu-Dong; Ma, Kuan-Sheng; Li, Xiao-Wu; Bie, Ping

    2016-01-01

    AIM: To investigate the efficacy and safety of adjuvant sorafenib after curative resection for patients with Barcelona Clinic Liver Cancer (BCLC)-stage C hepatocellular carcinoma (HCC). METHODS: Thirty-four HCC patients, classified as BCLC-stage C, received adjuvant sorafenib for high-risk of tumor recurrence after curative hepatectomy at a tertiary care university hospital. The study group was compared with a case-matched control group of 68 patients who received curative hepatectomy for HCC during the study period in a 1:2 ratio. RESULTS: The tumor recurrence rate was markedly lower in the sorafenib group (15/34, 44.1%) than in the control group (51/68, 75%, P = 0.002). The median disease-free survival was 12 mo in the study group and 10 mo in the control group. Tumor number more than 3, macrovascular invasion, hilar lymph nodes metastasis, and treatment with sorafenib were significant factors of disease-free survival by univariate analysis. Tumor number more than 3 and treatment with sorafenib were significant risk factors of disease-free survival by multivariate analysis in the Cox proportional hazards model. The disease-free survival and cumulative overall survival in the study group were significantly better than in the control group (P = 0.034 and 0.016, respectively). CONCLUSION: Our study verifies the potential benefit and safety of adjuvant sorafenib for both decreasing HCC recurrence and extending disease-free and overall survival rates for patients with BCLC-stage C HCC after curative resection. PMID:27340354

  16. Impact of immigration on the cost of emergency visits in Barcelona (Spain

    Directory of Open Access Journals (Sweden)

    García Oscar

    2007-01-01

    Full Text Available Abstract Background The impact of immigration on health services utilisation has been analysed by several studies performed in countries with lower levels of immigration than Spain. These studies indicate that health services utilisation is lower among the immigrant population than among the host population and that immigrants tend to use hospital emergency services at the expense of primary care. We aimed to quantify the relative over-utilisation of emergency services in the immigrant population. Methods Emergency visits to Hospital del Mar in Barcelona in 2002 and 2003 were analysed. The country of origin, gender, age, discharge-related circumstances (hospital admission, discharge to home, or death, medical specialty, and variable cost related to medical care were registered. Immigrants were grouped into those from high-income countries (IHIC and those from low-income countries (ILIC and the average direct cost was compared by country of origin. A multivariate linear mixed model of direct costs was adjusted by country of origin (classified in five groups and by the individual variables of age, gender, hospital admission, and death as a cause of discharge. Medical specialty was considered as a random effect. Results With the exception of gynaecological emergency visits, costs resulting from emergency visits by both groups of immigrants were lower than those due to visits by the Spanish-born population. This effect was especially marked for emergency visits by adults. Conclusion Immigrants tend to use the emergency department in preference to other health services. No differences were found between IHIC and ILIC, suggesting that this result was due to the ease of access to emergency services and to lack of knowledge about the country's health system rather than to poor health status resulting from immigrants' socioeconomic position. The use of costs as a variable of complexity represents an opportunistic use of a highly exhaustive registry

  17. Radiation protection in the radioactive installations of the Autonomous University of Barcelona

    International Nuclear Information System (INIS)

    In the Autonomous University of Barcelona (UAB) there are numerous investigation teaching activities that imply the use of equipment generating ionizing radiations or the manipulation of radioactive isotopes. The existence of disciplines so different as medicine, veterinary, biology, physics or chemistry gives rise to a broad diversity of applications, concerning the techniques carried out as well as to the equipment and radioactive isotopes that are used. Other notable characteristic of the university radioactive facilities is its spatial dissemination being located in different faculties and departments distributed all over the campus. The Spanish legislation establishes the regulation on the protection against ionizing radiations according to the guidelines of the EU. Furthermore, it exists a regulatory organisation in radiological safety matter that it is the Spanish Nuclear Security Council (Consejo de Seguridad Nuclear: CSN). This organisation checks and authorizes the performance protocols of all the nuclear and radioactive facilities of Spain. In order to coordinate the inherent activities to the management of the ionizing radiations in the UAB, it was necessary to create a Radiological Protection Service (RPS). Its most important task is to remind of the risks limitation principles in the use of the ionizing radiations to the involved professionals and to control the fulfillment of the radiological protection regulations in use. The basic document of the RPS is the Radiological Protection Handbook that must be approved and authorized by the CSN. All the procedures and guidelines concerning the organisation and safety management of the ionizing radiations used in the UAB investigation and teaching activities are written in this document. (author)

  18. PREVENCIÓN INDICADA DEL CONSUMO PROBLEMÁTICO DE DROGAS EN ADOLESCENTES DE BARCELONA

    Directory of Open Access Journals (Sweden)

    Anna M Guitart

    2012-01-01

    Full Text Available Fundamentos: El Servicio de Orientación sobre Drogas (SOD de Barcelona ofrece un programa de Información y Orientación (PIO para adolescentes y un Programa de Medidas Alternativas (PMA a menores sancionados por consumo/tenencia de drogas en la vía pública. El objetivo de este trabajo es describirlos y comparar los perfiles de los usuarios en cada uno de ellos. Métodos: Estudio transversal descriptivo de 1.010 personas atendidas en ambos programas durante el período 2008-2010, con cribado de patología psiquiátrica y adicción e intervención breve extendida en consumidores sin indicios de patología. Se compararon los perfiles de los usuarios y se calcularon las tasas de uso del PMA por edad. Resultados: El cannabis motivó el 89,9% de entradas en el Servicio. Entre los usuarios del PIO el consumo de alto riesgo de cannabis fue del 13,1% y el consumo de riesgo de alcohol del 11,3%. Entre los usuarios del PMA los consumos fueron del 8,9 y 4% respectivamente. El 38% de los usuarios del PIO y el 6% de los del PMA se derivaron a atención especializada por presentar criterios de abuso o dependencia a alguna sustancia psicoactiva u otro trastorno psiquiátrico. Conclusiones: Los adolescentes atendidos en PMA hacen un consumo de cannabis (y en muchos casos de alcohol de riesgo bajo o moderado comparados con los del PIO. Además del valor de la intervención preventiva indicada, los programas facilitan la detección precoz de consumos problemáticos o trastornos mentales incipientes y su derivación.

  19. Validation of DEMs Derived from High Resolution SAR Data: a Case Study on Barcelona

    Science.gov (United States)

    Sefercik, U. G.; Schunert, A.; Soergel, U.; Watanabe, K.

    2012-07-01

    In recent years, Synthetic Aperture Radar (SAR) data have been widely used for scientific applications and several SAR missions were realized. The active sensor principle and the signal wavelength in the order of centimeters provide all-day and all-weather capabilities, respectively. The modern German TerraSAR-X (TSX) satellite provides high spatial resolution down to one meter. Based on such data SAR Interferometry may yield high quality digital surface models (DSMs), which includes points located on 3d objects such as vegetation, forest, and elevated man-made structures. By removing these points, digital elevation model (DEM) representing the bare ground of Earth is obtained. The primary objective of this paper is the validation of DEMs obtained from TSX SAR data covering Barcelona area, Spain, in the framework of a scientific project conducted by ISPRS Working Group VII/2 "SAR Interferometry" that aims the evaluation of DEM derived from data of modern SAR satellite sensors. Towards this purpose, a DSM was generated with 10 m grid spacing using TSX StripMap mode SAR data and converted to a DEM by filtering. The accuracy results have been presented referring the comparison with a more accurate (10 cm-1 m) digital terrain model (DTM) derived from large scale photogrammetry. The results showed that the TSX DEM is quite coherent with the topography and the accuracy is in between ±8-10 m. As another application, the persistent scatterer interferometry (PSI) was conducted using TSX data and the outcomes were compared with a 3d city model available in Google Earth, which is known to be very precise because it is based on LIDAR data. The results showed that PSI outcomes are quite coherent with reference data and the RMSZ of differences is around 2.5 m.

  20. Everyday politics, social practices and movement networks: daily life in Barcelona's social centres.

    Science.gov (United States)

    Yates, Luke

    2015-06-01

    The relations between everyday life and political participation are of interest for much contemporary social science. Yet studies of social movement protest still pay disproportionate attention to moments of mobilization, and to movements with clear organizational boundaries, tactics and goals. Exceptions have explored collective identity, 'free spaces' and prefigurative politics, but such processes are framed as important only in accounting for movements in abeyance, or in explaining movement persistence. This article focuses on the social practices taking place in and around social movement spaces, showing that political meanings, knowledge and alternative forms of social organization are continually being developed and cultivated. Social centres in Barcelona, Spain, autonomous political spaces hosting cultural and educational events, protest campaigns and alternative living arrangements, are used as empirical case studies. Daily practices of food provisioning, distributing space and dividing labour are politicized and politicizing as they unfold and develop over time and through diverse networks around social centres. Following Melucci, such latent processes set the conditions for social movements and mobilization to occur. However, they not only underpin mobilization, but are themselves politically expressive and prefigurative, with multiple layers of latency and visibility identifiable in performances of practices. The variety of political forms - adversarial, expressive, theoretical, and routinized everyday practices, allow diverse identities, materialities and meanings to overlap in movement spaces, and help explain networks of mutual support between loosely knit networks of activists and non-activists. An approach which focuses on practices and networks rather than mobilization and collective actors, it is argued, helps show how everyday life and political protest are mutually constitutive. PMID:25597324

  1. METRIC SURVEY OF THE MONUMENT OF QUEEN ELISENDA'S TOMB IN THE MONASTERY OF PEDRALBES, BARCELONA

    Directory of Open Access Journals (Sweden)

    M. A. Núñez

    2012-09-01

    Full Text Available When an urban development is planned the cartography of this territory is necessary, in the same way before starting a project to rehabilitate a monument the graphic information about it has to be available. At present, different techniques are available which allow to obtain three-dimensional models with a different accuracy level and runtimes.This paper shows the work carried out to obtain the graphic information and three-dimensional models that are necessary for the rehabilitation project of the tomb of Queen Elisenda in the Monastery of Pedralbes, Barcelona (Spain. This monument has the peculiarity of being symmetrical about the wall separating monastery church and the cloister. To do this, different techniques have been used that allow us to obtain an accurate model and as complete as possible, for the analysis of the construction process of the monument. In order to achieve the complete architectural survey the integration of laser scanning and photogrammetric data, and CAD models has been necessary. Due to the detail of the sculptures and the Queen’s sarcophagus two sensors, with different resolution, range and accuracy, have been used to obtain the laser scanning data. Stereo pairs have been taken to obtain the 3D model of these elements to complete the model and obtain an ortophotography.In this way, a comparative analysis of both techniques has been carried out, in order to decide which one is the suitable for certain application. This investigation has been restricted to the tomb, in the two symmetrical parts of the monument.

  2. Modern design and safety analysis of the University of Florida Training Reactor

    International Nuclear Information System (INIS)

    Highlights: • A new safety analysis of the University of Florida Training Reactor is presented. • This analysis uses modern codes and replaces the NRC approved analysis from 1982. • Reduction in engineering margin confirms that the UFTR is a negligible risk reactor. • Safety systems are not required to ensure that safety limits are not breached. • Negligible risk reactors are ideal for testing digital I&C equipment. - Abstract: A comprehensive series of neutronics and thermal hydraulics analyses were conducted to demonstrate the University of Florida Training Reactor (UFTR), an ARGONAUT type research reactor, as a negligible risk reactor that does not require safety-related systems or components to prevent breach of a safety limit. These analyses show that there is no credible UFTR accident that would result in major fuel damage or risk to public health and safety. The analysis was based on two limiting scenarios, whose extremity bound all other accidents of consequence: (1) the large step insertion of positive reactivity and (2) the release of fission products due to mechanical damage to a spent fuel plate. The maximum step insertion of positive reactivity was modeled using PARET/ANL software and shows a maximum peak fuel temperature of 283.2 °C, which is significantly below the failure limit of 530 °C. The exposure to the staff and general public was calculated for the worst-case fission product release scenario using the ORIGEN-S and COMPLY codes and was shown to be 6.5% of the annual limit. Impacts on reactor operations and an Instrumentation & Control System (I&C) upgrade are discussed

  3. Modern design and safety analysis of the University of Florida Training Reactor

    Energy Technology Data Exchange (ETDEWEB)

    Jordan, K.A., E-mail: kjordan@ufl.edu [University of Florida, 106 UFTR Bldg., PO Box 116400, Gainesville, FL 32611-6400 (United States); Springfels, D., E-mail: dspringfels@ufl.edu [University of Florida, 106 UFTR Bldg., PO Box 116400, Gainesville, FL 32611-6400 (United States); Schubring, D., E-mail: dlschubring@ufl.edu [University of Florida, 202 Nuclear Science Building, PO Box 118300, Gainesville, FL 32611-8300 (United States)

    2015-05-15

    Highlights: • A new safety analysis of the University of Florida Training Reactor is presented. • This analysis uses modern codes and replaces the NRC approved analysis from 1982. • Reduction in engineering margin confirms that the UFTR is a negligible risk reactor. • Safety systems are not required to ensure that safety limits are not breached. • Negligible risk reactors are ideal for testing digital I&C equipment. - Abstract: A comprehensive series of neutronics and thermal hydraulics analyses were conducted to demonstrate the University of Florida Training Reactor (UFTR), an ARGONAUT type research reactor, as a negligible risk reactor that does not require safety-related systems or components to prevent breach of a safety limit. These analyses show that there is no credible UFTR accident that would result in major fuel damage or risk to public health and safety. The analysis was based on two limiting scenarios, whose extremity bound all other accidents of consequence: (1) the large step insertion of positive reactivity and (2) the release of fission products due to mechanical damage to a spent fuel plate. The maximum step insertion of positive reactivity was modeled using PARET/ANL software and shows a maximum peak fuel temperature of 283.2 °C, which is significantly below the failure limit of 530 °C. The exposure to the staff and general public was calculated for the worst-case fission product release scenario using the ORIGEN-S and COMPLY codes and was shown to be 6.5% of the annual limit. Impacts on reactor operations and an Instrumentation & Control System (I&C) upgrade are discussed.

  4. Empresas, instituciones y red social: la Compañía Hispanoamericana de Electricidad (CHADE entre Barcelona y Buenos Aires

    Directory of Open Access Journals (Sweden)

    Dalla-Corte Caballero, Gabriela

    2006-08-01

    Full Text Available In this paper we study the relation between the Casa de América of Barcelone and the Hispanoamerican Electric Company» (CHADE of Buenos Aires taking into account three moments: first, the foundation of the association Casa de América and the presence of Francisco Cambó in the Iberoamerican Jurídic Center; second, the foundation of CHADE so as to save the german´s inversions in America because of the participation of Germany in the First World War; third, the change of the American association of Barcelona into the Instituto de Economía Americana (IDEA-Casa de América so as to encourage their internacional activities until the Civil War in Spain.

    En este trabajo se presenta la vinculación entre la Casa de América de Barcelona y la Compañía Hispanoamericana de Electricidad (CHADE en Buenos Aires a través del estudio de tres momentos: primero, la fundación de la asociación y la presencia de Francisco Cambó en el Centro Jurídico Iberoamericano; segundo, la fundación de la CHADE para salvar los capitales alemanes del pago de reparaciones económicas a los Aliados por su participación en la Primera Guerra Mundial; y tercero, la conversión de la asociación americanista barcelonesa en Instituto de Economía Americana (IDEA-Casa de América para reforzar su naturaleza internacional en consonancia con la Sociedad de Naciones, así como el declive de la asociación por la interrupción de remesas de capital del Cono Sur que llegaban a Barcelona en forma de subsidios para la asociación americanista.

  5. NEUTRONIC REACTOR

    Science.gov (United States)

    Anderson, H.L.

    1960-09-20

    A nuclear reactor is described comprising fissionable material dispersed in graphite blocks, helium filling the voids of the blocks and the spaces therebetween, and means other than the helium in thermal conductive contact with the graphite for removing heat.

  6. NUCLEAR REACTOR

    Science.gov (United States)

    Miller, H.I.; Smith, R.C.

    1958-01-21

    This patent relates to nuclear reactors of the type which use a liquid fuel, such as a solution of uranyl sulfate in ordinary water which acts as the moderator. The reactor is comprised of a spherical vessel having a diameter of about 12 inches substantially surrounded by a reflector of beryllium oxide. Conventionnl control rods and safety rods are operated in slots in the reflector outside the vessel to control the operation of the reactor. An additional means for increasing the safety factor of the reactor by raising the ratio of delayed neutrons to prompt neutrons, is provided and consists of a soluble sulfate salt of beryllium dissolved in the liquid fuel in the proper proportion to obtain the result desired.

  7. Nuclear reactors

    International Nuclear Information System (INIS)

    This draft chart contains graphical symbols from which the type of (nuclear) reactor can be seen. They will serve as illustrations for graphical sketches. Important features of the individual reactor types are marked out graphically. The user can combine these symbols to characterize a specific reactor type. The basic graphical symbol is a square with a point in the centre. Functional groups can be depicted for closer specification. If two functional groups are not clearly separated, this is symbolized by a dotted line or a channel. Supply and discharge lines for coolant, moderator and fuel are specified in accordance with DIN 2481 and can be further specified by additional symbols if necessary. The examples in the paper show several different reactor types. (orig./AK)

  8. Variability of levels and composition of PM10 and PM2.5 in the Barcelona metro system

    Directory of Open Access Journals (Sweden)

    E. de Miguel

    2012-03-01

    Full Text Available From an environmental perspective, the underground metro system is one of the cleanest forms of public transportation in urban agglomerations. Current studies report contradicting results regarding air quality in the metro systems: whereas some reveal poor air quality, others report PM levels which are lower or of the same order of magnitude than those measured in traffic sites above ground level. The present work assesses summer indoor air quality and passenger exposure in the Barcelona metro, focusing on PM levels and their metal contents. In addition, the impact on indoor air quality of platform screen door systems (automated systems consisting of closed rail track and platforms is evaluated, to determine whether these systems reduce passenger exposure to PM when compared with conventional systems (open tracks and platforms. In the Barcelona metro, PM levels inside the trains in summer are amongst the lowest reported for worldwide metro systems (11–32 μPM2.5 m−3. This is most probably due to the air conditioning system working in all carriages of the Barcelona metro during the whole year. On the platforms, levels were considerably higher, reaching mean levels of 59 and 88 μgPM2.5 m−3 in the new (L9 and old (L3 lines, respectively. PM10 data are also reported in the present study, but comparison with other metro systems is more difficult due to the scarcity of data compared with PM2.5. Results showed clear PM daily cycles, with a drastic increase from 06:00 to 07:00 a.m., a diurnal maximum from 07:00 a.m. to 10:00 p.m., and marked decreases between 10:00 p.m. and 05:00 a.m. The elements with the highest enrichment are those associated with wheel or brake abrasion products (Ba, Fe, Cu, Mn, Cr, Sb, As, Mo, Co, Sr, among others. Laminar hematite (Fe2O3 was the dominant particle type, being mainly originated by mechanical abrasion of the rail track and wheels. Regarding passenger exposure to PM inside the metro system, the contribution of

  9. Sistema de detecció de presència a les vies del Transport Metropolità de Barcelona

    OpenAIRE

    Suñer Llaberia, Helena

    2009-01-01

    En aquest projecte es proposa un nou sistema per tal de disminuir el nombre d’incidències a la zona de vies de les estacions del Metro de Barcelona i augmentar la seguretat dels seus usuaris. Per prevenir els accidents que afectin passatgers, per intrusisme o caigudes accidentals a la zona de vies, actualment es tendeix a equipar les andanes amb un sistema de tancament d’andanes constituït bàsicament d’unes mampares d’alumini i vidre transparent, que separen l’andana de la v...

  10. La cara oculta de Barcelona : l’ambient a les galeries dels patis de l’Eixample Cerdà

    OpenAIRE

    Solsona Pairó, Xavier

    2015-01-01

    The aim of the thesis is to study !he environmental behavior of the gallery as a space in between the indoor of the building and outside and as a climate system. Specifically focuses on the galleries of the courtyards of Barcelona's Eixample Cerdà, which stand out from the other galleries located elsewhere, because of its versatility. The gallery is an architectural system that consisting of a closed balcony and adapted to the climatic conditions of the place. In Galician galleries the clo...

  11. Espais de Trànsit : una lectura de la societat contemporània, des del Metro de Barcelona

    OpenAIRE

    Pellicer i Cardona, Isabel

    2013-01-01

    En l’actualitat un dels espais urbans més utilitzats de la ciutat de Barcelona és el Metro. Les dades de 2011 així ho mostren. Diàriament més d’un milió de persones usen aquest mitjà de transport. Aquest dada posa de manifest l’elevada mobilitat ciutadana i, alhora, evidencia la importància dels trànsits, les trajectòries, els moviments... en la nostra quotidianitat. Partint d’aquesta consideració, i prenent com a posicionament el construccionisme social, hem realitzat una inve...

  12. Posibilidades de aplicación de los fangos residuales obtenidos de los dragados del puerto de Barcelona

    OpenAIRE

    Castillo León, Yimy

    2012-01-01

    El presente proyecto de investigación tiene como objetivo de estudio los fangos extraídos del fondo marino, resultado del dragado de la ampliación del Muelle Sur en el Puerto de Barcelona, la finalidad de éste, es el poder ofrecer diversas aplicaciones del mismo, que permitan su reutilización, aportando beneficio en la construcción y nuevas técnicas de reciclaje del material extraído. Los fangos extraídos se generan en grandes volúmenes, como resultado de esta producción, se ...

  13. Utilización del hormigón con árido reciclado en la ciudad de Barcelona

    OpenAIRE

    Etxeberria Larrañaga, Miren

    2011-01-01

    Debido a la necesidad de introducir áridos reciclados en el mercado y concretamente en Barcelona, se realizó un exhaustivo trabajo experimental en el laboratorio de Materiales de Construcción donde se determinaron las propiedades físico- químico mecánico de los áridos reciclados producidos de las dos plantas más importantes pertenecientes a Gestora de Runes de Catalunya s.a. (GRC) y se analizó el comportamiento de hormigones fabricados con áridos gruesos reciclados. A partir de los resulta...

  14. Guía sobre la implantación de una tasa por congestión en Barcelona

    OpenAIRE

    Cano Tarruella, Maria Isabel

    2004-01-01

    Análisis del modelo de movilidad actual de la Región Metropolitana de Barcelona y detección de sus disfunciones. Propuesta de un nuevo esquema de movilidad que contempla la implantación de una tasa por congestión, cuyo objetivo es internalizar los sobrecostes sociales y ambientales que el uso del vehículo privado en horas puntas genera. Definición de un conjunto de medidas complementarias indispensables para que la Administración pueda garantizar una alternativa eficiente en transporte públic...

  15. Estudio del crecimiento urbano disperso y los cambios en el paisaje en Matadepera (Región Metropolitana de Barcelona)

    OpenAIRE

    Badia i Perpinyà, Anna; Estany Ferrer, Gemma; Otero, Iago, 1981-; Martí BOADA

    2010-01-01

    En las últimas décadas las cubiertas del suelo de la Región Metropolitana de Barcelona han experimentado un gran proceso de transformación, generando un cambio en la estructura y la funcionalidad del paisaje. Los campos de cultivo han disminuido, la superficie forestal ha aumentado y el tejido urbano se ha dispersado. El presente artículo tiene como objetivo analizar el crecimiento urbano disperso en zonas de interfase urbano forestal y la percepción de algunos habitantes sobre la transformac...

  16. Experiències d'animació sòcio-cultural a l'Ajuntament de Barcelona

    OpenAIRE

    Colomer, J.

    1988-01-01

    Desde una concepción de la animación sociocultural como acción social y educativa, el Ayuntamiento de Barcelona ha optado por un modelo urbano participativo, que se ha traducido en una descentralización de las decisiones y de la prestación de servicios y en el establecimiento de diversos mecanismos reguladores de la participación ciudadana, así como en proyectos concretos de dinamización sociocultural. En este sentido, se hace una reflexión histórico-crítica sobre cuatro proyectos generados p...

  17. Bajo el signo de la crisis: los alcaldes mayores de Barcelona durante el reinado de Carlos IV

    OpenAIRE

    Cerro Nargánez, Rafael

    2010-01-01

    A lo largo del siglo XVIII, los alcaldes mayores o tenientes de corregidor de Barcelona, impuestos por Felipe V en el Decreto de Nueva Planta (1716), constituyeron el componente civil más visible de un corregimiento tan ampliamente militarizado como éste. Desde 1783, sus dos letrados habían sido clasificados en varas de tercera (más antigua) y de segunda clase (más moderna) respectivamente. Fueron responsabilidades suyas asesorar, al gobernador militar y político de la plaza (corregidor), en ...

  18. Programa de restauración de áreas periurbanas, 1994-2002 en Santa Coloma de Gramenet, Barcelona

    OpenAIRE

    Fogue i Moya, Antoni P.; Carrión Bernal, Tomás

    2003-01-01

    San la Coloma de Gramenet is a municipality of 125.000 inhabitants located within the Metropolitan Area of Barcelona, well on its way lo sustainability: Between the fifties and the seventies a heavy wave of immigration led lo largely unplanned urban growth . This had serious impact on the surrounding natural area, where there are still spaces preserving a certain ecological value in spite of the high human pressure and pollution by solid wastes. In 1994 the City Council se t up the Sub urban ...

  19. Mantenimiento de la infraestructura de recarga para vehículos eléctricos del Ayuntamiento de Barcelona

    OpenAIRE

    Montón Ibáñez, Javier

    2015-01-01

    Dentro de este Trabajo de Fin de Grado (TFG) se realiza el plan de mantenimiento para el año 2016 de la infraestructura de recarga de vehículo eléctrico del Ayuntamiento de Barcelona, valorando la solución más adecuada y económica para asegurar el correcto funcionamiento de la infraestructura. Además se estima el incremento de costes que supondrá, para la administración, la implementación de un plan de mantenimiento que incluya el mantenimiento preventivo de las instalaciones, permitiendo a l...

  20. Els inicis de l'enginyeria nuclear a Barcelona. La Càtedra Ferran Tallada (1955-1962)

    OpenAIRE

    Barca i Salom, Francesc Xavier

    2002-01-01

    Fa 150 anys que es van crear els estudis d'enginyeria industrial a Espanya amb l'objectiu de donar resposta a la creixent industrialització. Tanmateix, de totes les escoles inicialment creades sols l'Escola d'Enginyeria Industrial Barcelona va continuar la seva tasca sense interrupció des de 1851. A un període tant dilatat d'existència li correspon un ampli ventall d'esdeveniments. No obstant, aquesta tesi sols n'estudia un de concret emmarcat entre dues dates: la creació de la Càtedra Ferra...

  1. 22@ and the Innovation District in Barcelona and Montreal: A Process of Clustering Development between Urban Regeneration and Economic Competitiveness

    OpenAIRE

    Angelo Battaglia; Diane-Gabrielle Tremblay

    2011-01-01

    This paper analyzes the governance strategy of the 22@ District in Barcelona in order to assess the factors that explain its success and could support the economic reconversion of Montreal’s future Innovation District (ID), as well as that of other cities. We examine the case of the 22@ District as a former industrial neighbourhood seen as a “model” of urban regeneration and economic revitalization. Our assumption is that the world’s major cities are going through a phase based on the reorgan...

  2. La gestión de la Comunicación en la Guàrdia Urbana de Barcelona

    OpenAIRE

    Vinagre Fernández, Noelia

    2015-01-01

    El present treball és un projecte que té com a objectiu la realització d’un reportatge informatiu per a premsa escrita sobre la gestió de la comunicació a la Guàrdia Urbana de Barcelona. Al llarg del treball es desenvolupen de forma detallada tots els temes que es tractaran al futur reportatge, a més d’aspectes tècnics sobre la revista on es publicarà (s’ha plantejat una revista fictícia) i de disseny de la peça periodística.

  3. Social-ecological perspective in the analysis of protected natural areas of the metropolitan area of Barcelona (Spain)

    International Nuclear Information System (INIS)

    Socio ecological approach tries to integrate natural sciences and social sciences to study reality from an interdisciplinary perspective. Under this point of view, the article analyses the environmental history in the municipality of Matadepera and studies the socio ecological heritage in Olzinelles valley. Through the two case studies we link socio ecological approach with the improvement of management and conservation of two natural protected areas in the Barcelona Metropolitan Region: Sant Llorenc del Munt i l'Obac Natural Park and Montnegre i el Corredor Park

  4. TBL en un curso de Derecho de la Universidad de Barcelona: mejora de indicadores académicos.

    OpenAIRE

    Moraga, Daniel; Font Ribas, Antoni

    2016-01-01

    [spa] El presente artículo expone la comparación de tres estrategias instruccionales aplicadas simultáneamente en un curso de grado de la Facultad de Derecho de la Universidad de Barcelona en España en el semestre otoño 2012-2013 (septiembre-enero). Los estudiantes del curso "Derecho de la empresa y del mercado" (rectius, competencia y propiedad Industrial) fueron separados en tres grupos denominados M, O y T, donde el grupo M recibió clases magistrales (docencia tradicional), el grupo O reci...

  5. Consumo de tabaco de los adolescentes en Barcelona y tendencias a lo largo de 20 años

    OpenAIRE

    Carles Ariza; Xavier García-Continente; Joan Ramon Villalbí; Francesca Sánchez-Martínez; Anna Pérez; Manel Nebot

    2014-01-01

    Objetivos: El tabaquismo es causa de muerte prematura y prevenible, que se inicia en la adolescencia. Se describe el consumo de tabaco en escolares durante 2008 y la tendencia en los últimos 20 años en Barcelona. Material y métodos: Estudio de análisis de la tendencia del consumo. Se comparan datos de ocho encuestas realizadas entre 1987 y 2008 en 2° y 4° cursos de Educación Secundaria Obligatoria (ESO) y 2° de Bachillerato o Ciclos Formativos de Grado Medio. Se utilizó el cuestionario FRE...

  6. Virtual Visit to the ATLAS Control Room by INS Montserrat Miró High School in Barcelona

    CERN Multimedia

    2014-01-01

    We are a group of Physics students in our last course before university. Our High School, INS Montserrat Miró, is in Montcada in the outskirts of Barcelona. Nuclear Physics is a part of our syllabus and being engaged in this visit will allow us to understand more and more what research at CERN is really like. So we`re thrilled preparing our visit, and even more, we are lucky to get this videoconference to see more details about ATLAS experiment. All of us have entered in CERNLAND Contest. Several assignments have been done for that purpose. The atmosphere created is very engaqging due to this goal.

  7. Las TIC y los adolescentes. Estudio del consumo y los riesgos en una muestra de alumnas en Barcelona

    OpenAIRE

    Oriol-Freixa, María

    2014-01-01

    Este trabajo pretende averiguar cuál es la realidad de las TIC en el entorno de un grupo de alumnas de una escuela no muy lejos de la ciudad de Barcelona. A partir de una realidad actual, que es la potente expansión de estas tecnologías a prácticamente todos los ámbitos de la vida diaria de los usuarios, queremos ver si las adolescentes de 13 y 14 años a quienes dirigimos el estudio, están bajo el influjo de algunos peligros derivados de un uso abusivo o inadecuado. Pensamos que, por la edad ...

  8. Multifunctional reactors

    OpenAIRE

    Westerterp, K.R.

    1992-01-01

    Multifunctional reactors are single pieces of equipment in which, besides the reaction, other functions are carried out simultaneously. The other functions can be a heat, mass or momentum transfer operation and even another reaction. Multifunctional reactors are not new, but they have received much emphasis in research in the last decade. A survey is given of modern developments and the first successful applications on a large scale. It is explained why their application in many instances is ...

  9. NUCLEAR REACTOR

    Science.gov (United States)

    Anderson, C.R.

    1962-07-24

    A fluidized bed nuclear reactor and a method of operating such a reactor are described. In the design means are provided for flowing a liquid moderator upwardly through the center of a bed of pellets of a nentron-fissionable material at such a rate as to obtain particulate fluidization while constraining the lower pontion of the bed into a conical shape. A smooth circulation of particles rising in the center and falling at the outside of the bed is thereby established. (AEC)

  10. Nuclear reactor

    International Nuclear Information System (INIS)

    In order to reduce neutron embrittlement of the pressue vessel of an LWR, blanked off elements are fitted at the edge of the reactor core, with the same dimensions as the fuel elements. They are parallel to each other, and to the edge of the reactor taking the place of fuel rods, and are plates of neutron-absorbing material (stainless steel, boron steel, borated Al). (HP)

  11. Breeder reactors

    International Nuclear Information System (INIS)

    The reasons for the development of fast reactors are briefly reviewed (a propitious neutron balance oriented towards a maximum uranium burnup) and its special requirements (cooling, fissile material density and reprocessing) discussed. The three stages in the French program of fast reactor development are outlined with Rapsodie at Cadarache, Phenix at Marcoule, and Super Phenix at Creys-Malville. The more specific features of the program of research and development are emphasized: kinetics and the core, the fuel and the components

  12. La política nuclear espanyola: el caos del reactor nuclear Argos

    OpenAIRE

    Barca Salom, Francesc Xavier

    2000-01-01

    L’11 de juny de 1962 s’inaugurava a l’Escola Tècnica Superior d’Enginyeria Industrial de Barcelona un reactor nuclear experimental, que era batejat amb el nom mític d’Argos. Tota la premsa barcelonina se’n feu ressò i el presentava com el primer reactor construït íntegrament a Espanya per la Junta d’Energia Nuclear. La idea de dotar l’Escola d’un reactor nuclear havia nascut, però, set anys abans, precisament en el mateix moment de la creació de la Càtedra Ferran Tallada d’enginyeria...

  13. Species of Root-knot Nematodes and Fungal Egg Parasites Recovered from Vegetables in Almería and Barcelona, Spain

    OpenAIRE

    Verdejo Lucas, Soledad; Ornat Longarón, Cèsar; Sorribas Royo, Francisco Javier; Stchigel, Alberto Miguel

    2002-01-01

    Intensive vegetable production areas were surveyed in the provinces of Almería (35 sites) and Barcelona (22 sites), Spain, to determine the incidence and identity of Meloidogyne spp. and of fungal parasites of nematode eggs. Two species of Meloidogyne were found in Almería—M. javanica (63% of the samples) and M. incognita (31%). Three species were found in Barcelona, including M. incognita (50%), M. javanica (36%), and M. arenaria (14%). Solanaceous crops supported larger (P < 0.05) nematode ...

  14. De la integración deseada a la integración vivida: la experiencia de adolescentes brasileños en escuelas de Barcelona

    OpenAIRE

    Pires André, Bianka

    2007-01-01

    ResumenLa propuesta principal de este estudio fue investigar sobre los procesos de integración de un grupo de adolescentes brasileños en escuelas de Barcelona a partir de sus experiencias, mostrando de esta manera las distintas dimensiones que han caracterizado la integración en el caso de estos alumnos. Ahora bien, ¿Cómo viven los adolescentes brasileños la experiencia de integración en escuelas de Barcelona? ¿En qué consiste la integración socioeducativa de estos alumnos? A través de estos ...

  15. El mapa ecológico de Barcelona: los cambios de la ciudad en la últimas tres décadas

    OpenAIRE

    J. A. Burriel Moreno; J. J. Ibàñez I Martí; J. Terradas I Serra

    2006-01-01

    Barcelona presenta una importante dinámica en su estructura urbana, con repercusiones en el medio ambiente. Para la gestión y la planificación a escala municipal se precisa saber cómo se estructura la ciudad y cómo cambia en el tiempo. En este trabajo se presenta el Mapa ecológico de Barcelona (MEB), que cuenta con tres ediciones y recoge casi tres décadas (1977- 2004) de cambios en la estructura de la ciudad. En él, se representan las zonas ecológicas que componen el sistema u...

  16. Desenvolupament, normalització i validació de la versió estàndard de la segona versió del Test Barcelona

    OpenAIRE

    Quiñones Úbeda, Sonia

    2009-01-01

    La necessitat d'un replantejament del Programa Integrat d'Exploració Neuropsicològica-Test Barcelona (PIEN-TB) justifica la creació d'una segona versió que s'enmarqui en una aproximació d'exploració modular en etapes. La present Tesi Doctoral té com a objectius principals desenvolupar, normalitzar i validar la versió estàndard de la segona versió del Test Barcelona (PIEN-TB II) i aportar per tant, un instrument d'exploració neuropsicològica fiable, vàlid i amb una adequada capacitat per difer...

  17. El Museo Pedagógico Experimental de Barcelona: enclave para una historia de los pequeños museos pedagógicos

    Directory of Open Access Journals (Sweden)

    Eulàlia COLLELLDEMONT

    2009-05-01

    Full Text Available RESUMEN: El Museo Pedagógico experimental de Barcelona, iniciativa diseñada en 1907, sigue pautas de otras propuestas ya desarrolladas en Europa y por Cossío en el Museo Pedagógico de Madrid desde 1882. Es una envidiable plataforma pedagógica con orientación experimental.ABSTRACT: The Experimental Pedagogical Museum in Barcelona was designed in 1907 following European patterns. It was an excellent pedagogical platform with experimental courses.

  18. Anàlisi del tractament de la informació sobre Els Fills de Don Quixot a Barcelona en la premsa generalista espanyola i catalan

    OpenAIRE

    Muñoz, Pepa; Carrillo, Mauricio; Aguilar, Moisès

    2008-01-01

    La premsa generalista diària que es pot llegir a Barcelona va demostrar a principis de 2007 que se sotmet a les estratègies comunicatives de l’administració pública quan aquesta més ho necessita. Un exemple ho recull i queda demostrat en aquest article, que presenta una investigació sobre com van donar cobertura els diaris espanyols i catalans a la presència d’Els Fills de Don Quixot a Barcelona, i sobre com expliquen l’intent frustrat d’aquest grup d’organitzar una mobilització per l’accés a...

  19. Modelo Barcelona y política cultural: usos y abusos de la cultura por parte de un modelo emprendedor de desarrollo local

    OpenAIRE

    Joaquim Rius; M. Victoria Sánchez-Befando

    2015-01-01

    El Modelo Barcelona de desarrollo local ha sido intensamente debatido· Desde su inicio en los años ochenta hasta la actualidad, diversos autores han analizado sus características como modelo, destacado sus éxitos y también sus puntos débiles. No obstante, menos atención ha recibido la relación que existe entre el modelo de desarrollo local y el modelo de política cultural, a pesar de que Barcelona también es internacionalmente conocida por su dinamismo cultural. De manera habitual, este model...

  20. The Conceptual Metaphor Theory and the Application of Barcelona Sanchez’s Typical Model of Romantic Love to Dream in Peony Pavilion

    OpenAIRE

    Wang, Chenlu

    2010-01-01

    This thesis is a report on the application of Barcelona Sanchez’s typical model of romantic love to the Chinese literary work Dream in Peony Pavilion. In this play, the main theme is about love between two young people who are not supposed to have love desire freely. Language of emotion has been widely believed to be conceptualized metaphorically and metonymically. Barcelona Sanchez has identified some love metaphors and metonymies in Romeo and Juliet and how they apply to the typical model o...

  1. La Biblioteca del convento de Barcelona de la orden de la Merced: una herramienta para la formación de los frailes

    OpenAIRE

    Rodríguez Parada, Concepción

    2009-01-01

    [spa] Se analiza el fondo de la biblioteca del antiguo convento de la Merced de Barcelona a partir del "Indice general de esta biblioteca del convento de la Merced de Barcelona" elaborado en 1817 por fray Joaquín Borgas y conservado en UB Fons Antic (manuscrito 1500). Los índices de bibliotecas, más allá de su función de control del fondo y de garante de acceso al mismo, resulta un útil fundamental para conocer el perfil de los lectores además de permitir el estudio de la difusión de las idea...

  2. Biblioteca del convento de Barcelona de la orden de la Merced: una herramienta para la formación de los frailes, La

    OpenAIRE

    Rodríguez Parada, Concepción

    2009-01-01

    Se analiza el fondo de la biblioteca del antiguo convento de la Merced de Barcelona a partir del "Indice general de esta biblioteca del convento de la Merced de Barcelona" elaborado en 1817 por fray Joaquín Borgas y conservado en UB Fons Antic (manuscrito 1500).Los índices de bibliotecas, más allá de su función de control del fondo y de garante de acceso al mismo, resulta un útil fundamental para conocer el perfil de los lectores además de permitir el estudio de la difusión de las ideas. Su e...

  3. Influencia de las desigualdades sociales, la conflictividad social y la pobreza extrema sobre la morbilidad por tuberculosis en la ciudad de Barcelona

    OpenAIRE

    Díaz de Quijano Estela; Brugal M. Teresa; Pasarín M.ª Isabel; Galdós-Tangüís Hernando; Caylà Joan; Borrell Carme

    2001-01-01

    Fundamentos: El objetivo principal del presente estudio es analizar las desigualdades de la incidencia de co-enfermedad tuberculosis/drogadicción y de la incidencia de tuberculosis sin drogadicción en los barrios de Barcelona y su asociación con indicadores socioeconómicos y de privación social y material, durante los años 1990-1995. Métodos: Estudio ecológico que incluyó los casos de tuberculosis en personas residentes en la ciudad de Barcelona, siendo el barrio la unidad de análisis. Se con...

  4. Conocimiento y percepción de la nocividad del cigarrillo electrónico en población adulta de Barcelona

    OpenAIRE

    José M. Martínez-Sánchez; Marcela Fu; Montse Ballbè; Juan Carlos Martín-Sánchez; Esteve Saltó; Esteve Fernández

    2015-01-01

    Objetivo: Describir el conocimiento y la percepción de nocividad de los cigarrillos electrónicos (e-cigarrillos) en la población de Barcelona en 2013-2014. Métodos: Se utilizaron los datos del seguimiento (n = 736) de un estudio de cohortes de una muestra representativa de la población adulta de la ciudad de Barcelona. Resultados: El 79,2% de los participantes manifestó conocer el e-cigarrillo. El grado de conocimiento medio fue de 4,4 puntos sobre 10, con diferencias estadísticamente s...

  5. Repercusiones inesperadas de una transformación urbana ralentizada por la crisis. El retorno de los artistas al distrito creativo 22@Barcelona

    OpenAIRE

    Daniel Paül I Agustí

    2014-01-01

    Los cambios en la industria generalizados durante la segunda mitad del siglo XX fueron especialmente visibles en algunas áreas, como el Poblenou de Barcelona. En el año 2000 el Ayuntamiento de Barcelona impulsó un gran proyecto de transformación de este antiguo barrio industrial. Un proyecto urbanístico, económico y social que aspiraba a crear un nuevo distrito de la innovación. Tras unos inicios en los que se sucedían las grandes inversiones inmobiliarias, la crisis económica ralentizó algun...

  6. El poder dels consellers de Barcelona a través dels consolats d’ultramar (final del segle XIII i primer terç del XIV)

    OpenAIRE

    Mutgé Vives, Josefina

    2009-01-01

    La present comunicació estudia una de les xarxes a través de les quals el govern municipal de Barcelona féu ús del seu poder entre els darrers anys del segle XIII i el primer quart del XIV: els consolats d’ultramar. S’hi fa una nova lectura de diversos documents, procedents de l’Arxiu Històric de la Ciutat de Barcelona i de l’Arxiu de la Corona d’Aragó, sobre els quals ja s’havia treballat, i s’estudia com es manifestava el poder dels consellers sobre els consolats de catalans, en...

  7. Research reactors - an overview

    Energy Technology Data Exchange (ETDEWEB)

    West, C.D.

    1997-03-01

    A broad overview of different types of research and type reactors is provided in this paper. Reactor designs and operating conditions are briefly described for four reactors. The reactor types described include swimming pool reactors, the High Flux Isotope Reactor, the Mark I TRIGA reactor, and the Advanced Neutron Source reactor. Emphasis in the descriptions is placed on safety-related features of the reactors. 7 refs., 7 figs., 2 tabs.

  8. Beyond the Conventional Argonauts Explanations

    DEFF Research Database (Denmark)

    Rezaei, Shahamak

    professional and cultural experiences and their network in their home and host country to start up new firms in their home country. Following Schumpeter (1942) these firms are pr definition the outcome of innovative activities as the bifocality (Honig et al. 2010) of the transnational entrepreneurs allows for...

  9. Presenting SAPUSS: solving aerosol problem by using synergistic strategies at Barcelona, Spain

    Directory of Open Access Journals (Sweden)

    M. Dall'Osto

    2012-07-01

    Full Text Available This paper presents the summary of the key objectives, instrumentation and logistic details, goals, and initial scientific findings of the Marie Curie Action FP7-EU SAPUSS project carried out in the Western Mediterranean Basin (WMB from 20 September–20 October 2010. The experiment involved concurrent measurements of aerosols with multiple techniques occurring simultaneously. The key objective is to deduce point aerosol source characteristics and to understand the atmospheric processes responsible for their generations and transformations. The unique approach is the large variety of instrumentation deployed simultaneously in six monitoring sites in Barcelona (NE Spain and around the city, including: a main road traffic site, two urban background sites, a regional background site and two tower sites (150 m and 545 m a.s.l., 150 m and 80 m above ground, respectively. The SAPUSS experiment allows us to interpret the variability of aerosols levels and composition in an Urban Mediterranean, an environment not well characterized so far. During SAPUSS different air mass scenarios were encountered, including warm Saharan, cold Atlantic, wet European and stagnant Regional ones and presenting different local meteorology and boundary layer conditions. Analysis of part of the data collected allows us to compare the monitoring sites as well as to draw scientific conclusions about relevant air quality parameters. High levels of traffic-related gaseous pollutants were measured at the urban ground level monitoring sites, whereas layers of tropospheric ozone were recorded at tower levels. Particularly, tower level night time average ozone concentrations (80 ± 25 μg m−3 were up to double than ground level ones. Particle number concentrations (N>5: 9980 ± 6500 cm−1, average of all measurements were generally traffic dependent, although a contribution from two different types of nucleation events was also found

  10. Presenting SAPUSS: Solving Aerosol Problem by Using Synergistic Strategies in Barcelona, Spain

    Directory of Open Access Journals (Sweden)

    M. Dall'Osto

    2013-09-01

    Full Text Available This paper presents the summary of the key objectives, instrumentation and logistic details, goals, and initial scientific findings of the European Marie Curie Action SAPUSS project carried out in the western Mediterranean Basin (WMB during September–October in autumn 2010. The key SAPUSS objective is to deduce aerosol source characteristics and to understand the atmospheric processes responsible for their generations and transformations – both horizontally and vertically in the Mediterranean urban environment. In order to achieve so, the unique approach of SAPUSS is the concurrent measurements of aerosols with multiple techniques occurring simultaneously in six monitoring sites around the city of Barcelona (NE Spain: a main road traffic site, two urban background sites, a regional background site and two urban tower sites (150 m and 545 m above sea level, 150 m and 80 m above ground, respectively. SAPUSS allows us to advance our knowledge sensibly of the atmospheric chemistry and physics of the urban Mediterranean environment. This is well achieved only because of both the three dimensional spatial scale and the high sampling time resolution used. During SAPUSS different meteorological regimes were encountered, including warm Saharan, cold Atlantic, wet European and stagnant regional ones. The different meteorology of such regimes is herein described. Additionally, we report the trends of the parameters regulated by air quality purposes (both gaseous and aerosol mass concentrations; and we also compare the six monitoring sites. High levels of traffic-related gaseous pollutants were measured at the urban ground level monitoring sites, whereas layers of tropospheric ozone were recorded at tower levels. Particularly, tower level night-time average ozone concentrations (80 ± 25 μg m−3 were up to double compared to ground level ones. The examination of the vertical profiles clearly shows the predominant influence of NOx on ozone

  11. Improving the modeling of road dust levels for Barcelona at urban scale and street level

    Science.gov (United States)

    Amato, Fulvio; Zandveld, Peter; Keuken, Menno; Jonkers, Sander; Querol, Xavier; Reche, Cristina; Denier van der Gon, Hugo A. C.; Schaap, Martijn

    2016-01-01

    Road dust emission is an emerging issue in air quality due to the lack of remediation measures in contrast to vehicle exhaust emissions. The evidence of receptor modeling studies allows for quantifying impact on a few receptors, but the high cost of PM chemical speciation data and the questionable representativeness of single monitoring sites, limit considerably the development of population exposure estimates and epidemiologic studies based on georeferenced data. This study attempts to initiate and promote urban-scale dispersion modeling for road dust emissions, which will allow for a more robust estimate of population exposure and health outcomes. The TNO URBIS (URBan Information System) model was applied in the city of Barcelona, implementing a Gaussian line source and a street canyon dispersion model, together with new experimental estimates of road dust emission factors and algorithm to describe the time variability. Annual, daily and hourly road dust contributions were simulated and validated against observation of PM10, mineral dust and hourly PM2.5-10 concentrations. Results show that road dust contributed 9-15% to PM10 levels at background sites, and 23-44% at traffic sites. Highest contributions were modeled in the commercial/residential district where most of population live and work (Eixample) structured by 120 m wide square blocks, separated by roads with >10,000 vehicles per day. Street level contributions rise up to 20 μg/m3 (96% of roads) and an additional 3% of roads within 20-40 μg/m3. Hourly simulations of road dust contributions revealed to benefit from the implementation of the new emission module (Amato et al., 2012), able to describe the exponential recovery of road dust emission potential after rain events, when compared to common approach such as the use of constant emission factor or an ON/OFF approach. Correlation coefficients with observed data varied from 0.61, 0.58 and 0.43 for annual, daily and hourly means, respectively, revealing

  12. XXIX International Meeting on Fundamental Physics, Sitges, Barcelona, Spain, 5-9 February, 2001

    International Nuclear Information System (INIS)

    The XXIX International Winter Meeting on Fundamental Physics took place in Sitges, Barcelona, Spain, from 5 to 9 February, 2001. The meeting was organized by the Universidad Complutense de Madrid (UCM) in collaboration with CIEMAT. It was supported by the Programa Nacional de Fisica de Altas Energias, by UCM and CIEMAT. As in previous editions, it brought together researchers working in experimental and theoretical Particle and Astroparticle Physics. More than seventy physicists from several countries participated in the Meeting. General talks, most recent results and time for physics discussions were considered in the program. In parallel to the development of the Meeting several other events took place. These events included a meeting to study the future of the Spanish Program of Advanced Studies in Theoretical High Energy Physics, an informal meeting to study the future for detection of high energy neutrino beams with underground detectors in the Canary Islands and another one concerning the PDGE /Proyecto Data Grid Espana). In addition we had the last day a special seminar in the honour of the 60th anniversary of Professor Yndurain. Francisco J. Yndurain played a leading role in the development of High Energy Physics in Spain and all over he was one of the founders of the International Meeting on Fundamental Physics in 1973 (in those days called International Winter Meeting on Fundamental Physics). The efficient assistance of M. Fatas in the organization of the conference is warmly appreciated. We thank R. Pascual for helping us to find the excellent hotel Calipolis where the meeting took place. We are deeply indebted to M. J. Josa and to the HEGRA people form the UCM for their valuable technical assistance along the entire process of preparing the Meeting. We also thank J. C. Gonzalez and M. Lopez for their effort in the preparation of these proceedings and finally to p. Seoane for the design of the poster, advertisements and the logo of the Meeting. Finally

  13. Toxic assessment of urban atmospheric particle-bound PAHs: Relevance of composition and particle size in Barcelona (Spain)

    International Nuclear Information System (INIS)

    Zebrafish embryotoxicity and dioxin-like activity levels were tested for particulate air samples from an urban background site in Barcelona (Spain). Samples were collected during 14 months, and maximal values for both biological activities corresponded to samples collected during late autumn months, correlating with elevated PAH levels. Vehicle and combustion emissions appeared as the potentially most toxic sources, whereas total PM mass and mineral content appeared to be poor predictors of the biological activity of the samples. Samples simultaneously collected at different particle size cut-offs (10, 2.5, and 1 μm) did not differ significantly in dioxin-like PAH levels and biological activity, indicating that the sub-micron particle fraction (PM1) concentrated essentially all observed toxicity. Our results support the need for a tighter control on sub-micron particle emissions and show that total PM mass and, particularly, PM10, may not fully characterize the toxic potential of air samples. Highlights: • Dioxin-like activity was found in all air particle samples collected in Barcelona. • 50% of the samples showed different levels of fish embryotoxicity. • Toxic effects associated to PAHs and linked to vehicle and combustion emissions. • The toxicity was not correlated to PM mass or mineral content. • The sub-micron particle fraction PM1 concentrated essentially all observed toxicity. -- In vivo toxic effects associated to sub-micron urban air particles from combustion and vehicle emissions

  14. Epidemiological voice health map of the teaching population of Granollers (Barcelona) developed from the EVES questionnaire and the VHI.

    Science.gov (United States)

    Godall, Pere; Gassull, Cecília; Godoy, Anna; Amador, Miquel

    2015-12-01

    The aim of this research project was to carry out an epidemiological study on the voice health of the teaching population in Granollers (Barcelona) using the EVES questionnaire and to relate the collected data to the VHI results. The study sample consisted of 233 teachers from Granollers (Barcelona). The EVES questionnaire, which includes the VHI-10, was conducted online. A high percentage of the teachers consulted suffered voice disorders, which ranged from minor to more serious cases. In regard to the data obtained using the VHI, in 28.77% of the cases there was a moderate or a serious perception of voice problems. Out of these cases only one person, who had a moderate perception of their problem, was undergoing voice therapy with a speech therapist. There are three questions in the EVES questionnaire that can efficiently indicate the existence of a voice disorder in a straightforward manner, and the results for these were similar to those recorded for the VHI group of questions. Therefore, it may be argued that questions that refer to the perception of the degree of pleasantness of one's own voice should be included, because they would provide a useful way to indicate whether there is a voice problem at a preliminary screening stage. PMID:25573301

  15. Spatial and temporal variability of PM levels and composition in a complex summer atmospheric scenario in Barcelona (NE Spain)

    Science.gov (United States)

    Viana, M.; Pérez, C.; Querol, X.; Alastuey, A.; Nickovic, S.; Baldasano, J. M.

    Summer atmospheric coastal dynamics exert a significant influence on the levels and composition of atmospheric particulate matter (PM) in the North-Eastern Iberian Peninsula. Summer atmospheric scenarios in this region present a high degree of complexity as they are characterised by the absence of synoptic-scale air mass advections, the development of breeze circulations, enhanced photochemistry, local mineral dust re-suspension and the occurrence of African dust outbreaks. Three sampling sites were selected in Barcelona (NE Spain), an urban coastal site surrounded by complex topography. Regional dust modelling (DREAM) and high resolution meteorological modelling (MM5) were used to interpret PM levels and composition at the three sites. The results outline the effect of breeze dynamics and thermal internal boundary layer formation as the main meteorological drivers of the hourly evolution of PM levels. Levels of crustal components, secondary inorganic and carbon species are higher during the night, and only the marine aerosol content is higher during the day. Nitrate levels are higher during the night due to the thermal stability on NH 4NO 3. Sulphate levels are higher during the night as a consequence of the drainage flows. Lidar measurements and model results signalled the occurrence of two African dust episodes during the study period which mainly affected the free troposphere over Barcelona.

  16. Edificios con forjados postesados mediante tendones no adherentes. Edificio Mapfre-Vía Augusta, en Barcelona-España

    Directory of Open Access Journals (Sweden)

    Llombart Jaques, José Antonio

    1994-08-01

    Full Text Available The technique of unbonded tendons applied to post-tensioned flat-slabs of buildings of certain importance has not been very frequent in Spain to date; in fact, it was used on very few occasions. This article gives the basic characteristics of the post-tensioned floors comparing them with the conventional solutions of reinforced concrete floors. The second part of the article brings a description of the main aspects of the design and construction of the Mapfre-Vía Augusta building in Barcelona. This recently raised building has the floor construction with slabs post-tensioned by unbonded tendons.

    La técnica del postesado no adherente, aplicada a losas de forjado de edificios de cierta entidad, ha sido hasta el momento poco común en España, habiéndose utilizado solamente en contadas ocasiones. Se indican, en primer lugar, las características fundamentales de los forjados postesados y se establecen comparaciones con soluciones convencionales de forjados de hormigón armado. En la segunda parte del artículo se describen los principales aspectos de proyecto y construcción de la estructura del Edificio Mapfre-Vía Augusta, en Barcelona, de reciente construcción, cuyos forjados están constituidos por losas postesadas mediante tendones no adherentes.

  17. Building a panel data set on fuel stations located in the Spanish regional areas of Madrid and Barcelona.

    Science.gov (United States)

    Balaguer, Jacint; Ripollés, Jordi

    2016-06-01

    The data described in this article were collected daily over the period June 10, 2010, to November 25, 2012, from the website of the Spanish Ministry of Industry, Energy and Tourism. The database includes information about fuel stations regarding to their prices (both gross and net of taxes), brand, location (latitude and longitude), and postal code in the Spanish provinces of Madrid and Barcelona. Moreover, obtaining the postal codes has allowed us to select those stations that are operating within the metropolitan areas of Madrid and Barcelona. By considering those fuel stations that uninterruptedly provided prices during the entire period, the data can be especially useful to explore the dynamics of prices in fuel markets. This is the case of Balaguer and Ripollés (2016), "Asymmetric fuel price responses under heterogeneity" [1], who, taking into account the presence of the potential heterogeneity of the behaviour of fuel stations, used this statistical information to perform an analysis on asymmetric fuel price responses. PMID:26933671

  18. Aspectos constructivos puestos de manifiesto en la restauración del Park Güell de Barcelona

    Directory of Open Access Journals (Sweden)

    Rovira i Pey, Josep

    1990-08-01

    Full Text Available The Park Güell of Barcelona, by Antoni Gaudí, is one of the most beautiful architectural landscapes ever conceived by man. The natural forms and those created by the author intermix in a suggestive and disturbing harmony. To construct these forms, Gaudí resorted to his structural intuition and risked using certain materials in an original manner. Only the dissection forced by the restoration of this aging work has allowed us to unravel some of its enigmas. The surprise produced by some of the solutions, does not alter, nonetheless, our considerations towards the powerful intuitive and creative capacity of Antoni Gaudí.

    En el Park Güell de Barcelona, uno de los paisajes más bellos creados por la arquitectura, las formas naturales y las creadas por la imaginación del autor se entremezclan en una armonía sugestiva, inquietante. Para construir esas formas, Gaudí echó mano de su intuición estructural y se arriesgó a utilizar algunos materiales de una forma singular. Sólo la disección a la que ha obligado la restauración de la obra envejecida, nos ha permitido conocer algunos de sus entresijos. La sorpresa, o los reparos que nos producen algunas soluciones, no hacen variar, no obstante, la consideración respecto a la portentosa capacidad intuitiva y creativa de Gaudí.

  19. De la perrera municipal al centro de acogida de animales de compañía de Barcelona

    Directory of Open Access Journals (Sweden)

    Peracho V.

    2003-01-01

    Full Text Available El objetivo de este trabajo es presentar la evolución de la política y los servicios de salud pública relativos a los animales de compañía en la ciudad de Barcelona de 1983 a 2001. Partiendo de una actividad centrada en la custodia y la eutanasia de los animales sin dueño de Barcelona, y ofertando también servicios al resto de la provincia, se formula un Plan de Animales de Compañía para la ciudad y se reorienta la actividad, centrándola en los límites estrictos del municipio y el estímulo de la adopción. Se busca la participación de profesionales y entidades proteccionistas, se remodelan las instalaciones, se fomenta la tenencia responsable de animales, se crean colonias urbanas controladas de gatos y se estimulan las adopciones, redefiniendo la actividad con una mayor orientación al cliente. La evolución de la actividad desde 1998 refleja una notable disminución en el volumen de animales custodiados, así como en la proporción de los sacrificados. Esta disminución puede reflejar una mejora en el problema de los animales abandonados. Estos cambios se han traducido en una modificación positiva de las relaciones con los medios de comunicación y las entidades proteccionistas.

  20. Bolivian migrants with Chagas disease in Barcelona, Spain: a qualitative study of dietary changes and digestive problems.

    Science.gov (United States)

    Posada, Elizabeth; Pell, Christopher; Angulo, Nataly; Pinazo, María Jesús; Gimeno, Faust; Elizalde, Ignasi; Gysels, Marjolein; Muñoz, Jose; Pool, Robert; Gascón, Joaquim

    2011-12-01

    Due to international migration, Chagas disease, endemic in Latin America, has become more common in non-endemic areas. Chronic Chagas disease can cause damage to the digestive system leading to constipation. However, a range of factors influences constipation and a better understanding of the role of non-Chagas related factors is required to improve management of Chagas-related digestive problems. This study explores perceptions of constipation and changes in food and exercise habits amongst Bolivians in Barcelona, Spain. Bolivian migrants attending the Tropical Medicine Unit (Hospital Clínic, Barcelona) were interviewed about their food habits in Spain and Bolivia, migratory experience, work and leisure activities. Chagas seropositive participants also received radiological examinations. Bolivian migrants experienced dietary changes, influenced by work-related factors, which included reductions in quantities of food and liquid consumed. Almost half the participants reported changes in digestive rhythm since arriving in Spain. Constipation, which was common, in some cases was only recounted during interviews. Bolivian migrants' constipation may be associated with chronic Chagas disease or migration-related dietary changes. Careful questioning using the Rome III criteria is however required to ensure its diagnosis. Radiological studies are also required to confirm the role of Chagas disease and identify potentially serious intestinal damage. PMID:24038501

  1. Analysis of the radiometric survey during the Argonauta reactor operation; Analise do levantamento radiometrico durante operacao do reator Argonauta

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Eara de S.L.; Cardozo, Katia K.M.; Silva, Joao Carlos P.; Santos, Joao Regis dos, E-mail: esluz@ien.gov.br, E-mail: cardozo@ien.gov.br, E-mail: jcarlos@ien.gov.br, E-mail: regis@ien.gov.br [Instituto de Engenharia Nuclear (CNEN-IEN/RJ), Rio de Janeiro - RJ (Brazil)

    2013-07-01

    The Argonaut reactor at the Institute of Nuclear Engineering-IEN/CNEN, operates normally, the powers between 1.7 and 340 W on neutrongraphy procedures, production of radionuclides and experimental reactor physics lessons to postgraduate courses. The doses from neutrons and gamma radiation are measured when the reactor is critical, inside the reactor hall and surrounding regions. A study of the data obtained was performed to evaluate the daily need of this survey in the reactor hall. Taking into account the principle ALARA, which aims to optimize and minimize the dose received by the individual, we propose, in this work, through an analysis of the acquired data in occupational radiometric surveys, a reformulation of the area monitoring routine practiced by the team of radiological protection of the Institute of Nuclear Engineering - IEN/CNEN-RJ, whereas other monitoring routines regarding the radiological protection are also applied in the routine of the reactor. The operations under review occurred with the reactor operating 340 W power at intervals of 60, 120 and 180 minutes, in monitoring points in controlled areas, supervised and free. The results showed significant dose values in the output of the J-Channel 9 when the operation occurs with this open. With 180 minutes of operation, the measured values of dose rate were lower than the values at 60 min and 120 operations min. At the point in the supervised area, offsite to the reactor hall, situated in the direction of the J-Channel 9, the value reduces more than 14% in any operating time in relation to the dose rate measured at the point opposite the canal. There is a 50% reduction in the dose rates for operations with and J-9 closed. The results suggest a new frequency of radiometric survey whose mode of operation is maintained in similar conditions, since combined with other relevant practices of radiation protection.

  2. Reactor utilization

    International Nuclear Information System (INIS)

    In 1962, the RA reactor was operated almost three times more than in 1961, producing total of 25 555 MWh. Diagram containing comparative data about reactor operation for 1960, 1961, and 1962, percent of fuel used and U-235 burnup shows increase in reactor operation. Number of samples irradiated was 659, number of experiments done was 16. mean powered level was 5.93 MW. Fuel was added into the core twice during the reporting year. In fact the core was increased from 56 to 68 fuel channels and later to 84 fuel channels. Fuel was added to the core when the reactivity worth decreased to the minimum operation level due to burnup. In addition to this 5 central fuel channels were exchanged with fresh fuel in february for the purpose of irradiation in the VISA-2 channel

  3. Reactor Neutrinos

    CERN Document Server

    Lasserre, T; Lasserre, Thierry; Sobel, Henry W.

    2005-01-01

    We review the status and the results of reactor neutrino experiments, that toe the cutting edge of neutrino research. Short baseline experiments have provided the measurement of the reactor neutrino spectrum, and are still searching for important phenomena such as the neutrino magnetic moment. They could open the door to the measurement of coherent neutrino scattering in a near future. Middle and long baseline oscillation experiments at Chooz and KamLAND have played a relevant role in neutrino oscillation physics in the last years. It is now widely accepted that a new middle baseline disappearance reactor neutrino experiment with multiple detectors could provide a clean measurement of the last undetermined neutrino mixing angle theta13. We conclude by opening on possible use of neutrinos for Society: NonProliferation of Nuclear materials and Geophysics.

  4. Nuclear reactors

    International Nuclear Information System (INIS)

    A nuclear reactor has a large prompt negative temperature coefficient of reactivity. A reactor core assembly of a plurality of fluid-tight fuel elements is located within a water-filled tank. Each fuel element contains a solid homogeneous mixture of 50-79 w/o zirconium hydride, 20-50 w/o uranium and 0.5-1.5 W erbium. The uranium is not more than 20 percent enriched, and the ratio of hydrogen atoms to zirconium atoms is between 1.5:1 and 7:1. The core has a long lifetime, E.G., at least about 1200 days

  5. Nuclear reactors

    International Nuclear Information System (INIS)

    In a liquid cooled nuclear reactor, the combination is described for a single-walled vessel containing liquid coolant in which the reactor core is submerged, and a containment structure, primarily of material for shielding against radioactivity, surrounding at least the liquid-containing part of the vessel with clearance therebetween and having that surface thereof which faces the vessel make compatible with the liquid, thereby providing a leak jacket for the vessel. The structure is preferably a metal-lined concrete vault, and cooling means are provided for protecting the concrete against reaching a temperature at which damage would occur. (U.S.)

  6. De la perrera municipal al centro de acogida de animales de compañía de Barcelona From the municipal dog pound to the pet shelter in Barcelona, Spain

    Directory of Open Access Journals (Sweden)

    V. Peracho

    2003-12-01

    Full Text Available El objetivo de este trabajo es presentar la evolución de la política y los servicios de salud pública relativos a los animales de compañía en la ciudad de Barcelona de 1983 a 2001. Partiendo de una actividad centrada en la custodia y la eutanasia de los animales sin dueño de Barcelona, y ofertando también servicios al resto de la provincia, se formula un Plan de Animales de Compañía para la ciudad y se reorienta la actividad, centrándola en los límites estrictos del municipio y el estímulo de la adopción. Se busca la participación de profesionales y entidades proteccionistas, se remodelan las instalaciones, se fomenta la tenencia responsable de animales, se crean colonias urbanas controladas de gatos y se estimulan las adopciones, redefiniendo la actividad con una mayor orientación al cliente. La evolución de la actividad desde 1998 refleja una notable disminución en el volumen de animales custodiados, así como en la proporción de los sacrificados. Esta disminución puede reflejar una mejora en el problema de los animales abandonados. Estos cambios se han traducido en una modificación positiva de las relaciones con los medios de comunicación y las entidades proteccionistas.This article aims to present changes in public health policy and services related to pet dogs and cats in the city of Barcelona from 1983 to 2001. Initially the center's activity was limited to the custody and euthanasia of stray animals, serving not only the city but also the rest of the province. With the formulation of a city Plan for Pet Animals, the activities were redirected, concentrating on services within the city limits and stimulating adoption. Participation of both professional and humane organizations was sought, premises were renovated, responsible ownership of animals was promoted, controlled urban colonies of cats were established, and adoptions become the cornerstone of policy, centering the activity of the shelter toward its clients

  7. Evaluación de la Conservación de la Colección Sabater Pi en la Biblioteca de la Universitat de Barcelona

    OpenAIRE

    Andrades Márquez, Tana; Palau i Sallent, Domènec

    2011-01-01

    Máster en Direcció de Projectes de Conservació-Restauració: Col.leccions i Conjunts Patrimonials. Universitat de Barcelona. Col.leccions: de la quotidianitat a l’ambit museistic, Coordinació: Anna Nualart Torroja

  8. Muusikamaailm : Lihavõttefestivalid Euroopas. Uus kontserdimaja avati Barcelonas. Johann Adolf Hasse ئ 300. Märtsikuu teisi tähtpäevi / Priit Kuusk

    Index Scriptorium Estoniae

    Kuusk, Priit, 1938-

    1999-01-01

    Lihavõttefestivalidest Salzburgis, Viinis ja Luzernis. kontsertidest, esinejatest. Barcelonas avatud uuest kontserdimajast L"Auditori. Helilooja 300. sünniaastapäeva puhul on mitmel pool Euroopas välja toodud tema ooperite uuslavastusi. Muusikute tähtpäevi märtsis 1999

  9. Analytical considerations in the use of capture-recapture to estimate prevalence: case studies of the estimation of opiate use in the metropolitan area of Barcelona, Spain.

    Science.gov (United States)

    Domingo-Salvany, A; Hartnoll, R L; Maguire, A; Brugal, M T; Albertín, P; Caylà, J A; Casabona, J; Suelves, J M

    1998-10-15

    Capture-recapture, an indirect method widely used to estimate undetected populations, has been criticized because it causes problems due to a lack of compliance with several important assumptions and model selection strategies. This paper expands on the problems encountered when applying this methodology to drug abuse estimations, specifically the prevalence of opiate use in the metropolitan area of Barcelona, Spain, in 1993. Three samples of opiate users (from hospital emergency rooms, treatment centers, and prisons) were available in the area studied; an additional sample (mortality data) was analyzed for the city of Barcelona. Log-linear models that provided a good fit were considered, to which further model selection strategies were applied. A total of 3,207 unique individuals aged 15-44 years were identified in the three samples from the greater Barcelona area; the mortality sample from the city of Barcelona contained an additional 83 individuals. Heterogeneity was observed in different age, sex, and residence area subgroups. Population estimates differed widely according to the log-linear model chosen. Minimum Akaike's information criterion model and saturated model estimates were used to produce population prevalence rates. The main problems the authors encountered in this study were related to population definition, source heterogeneity, and assessment of an adequate model, a problem associated with sample size. PMID:9786228

  10. Evolución del Módulo Común de Firma Electrónica del Ayuntamiento de Barcelona

    OpenAIRE

    Fernández Martín, Javier

    2016-01-01

    Partiendo de una versión inicial de módulo común de firma electrónica del Ayuntamiento de Barcelona, analizar sus problemas y debilidades para implementar una nueva versión que los solucione. El proyecto recoge la evolución desde Octubre de 2009 hasta Mayo de 2016, se ha ido evolucionando por fases

  11. Cataluña, deporte, medios de comunicación : Barcelona '92, los Juegos de la comunicación

    OpenAIRE

    Moragas Spà, Miquel de

    1992-01-01

    Los medios de comunicación definen el movimiento olímpico moderno. Barcelona'92 será uno de los procesos de comunicación más importantes de la historia de la televisión y de la historia de la humanidad.

  12. Nuclear reactor

    International Nuclear Information System (INIS)

    In an improved reactor core for a high conversion BWR reactor, Pu-breeding type BWR type reactor, Pu-breeding type BWR type rector, FEBR type reactor, etc., two types of fuel assemblies are loaded such that fuel assemblies using a channel box of a smaller irradiation deformation ratio are loaded in a high conversion region, while other fuel assemblies are loaded in a burner region. This enables to suppress the irradiation deformation within an allowable limit in the high conversion region where the fast neutron flux is high and the load weight from the inside of the channel box due to the pressure loss is large. At the same time, the irradiation deformation can be restricted within an allowable limit without deteriorating the neutron economy in the burner region in which fast neutron flux is low and the load weight from the inside of the channel box is small since a channel box with smaller neutron absorption cross section or reduced wall thickness is charged. As a result, it is possible to prevent structural deformations such as swelling of the channel box, bending of the entire assemblies, bending of fuel rods, etc. (K.M.)

  13. Tendencias en el consumo de tabaco, alcohol y cannabis de los escolares de Barcelona (1987-1999 Trends in tobacco, alcohol and cannabis consumption among secondary school pupils in Barcelona, Spain [1987-1999

    Directory of Open Access Journals (Sweden)

    C. Ariza

    2003-06-01

    Full Text Available Objetivo: Describir las tendencias en el consumo de tabaco, alcohol y cannabis entre los adolescentes escolarizados entre 1987 y 1999 de la ciudad de Barcelona. Métodos: Encuestas transversales realizadas a muestras representativas de escolares de segundo curso de Educación Secundaria Obligatoria (ESO entre 1987 y 1999. Los cuestionarios eran anónimos y autocontestados. Se dispone de datos de 5.013 escolares de la ciudad de Barcelona que participan en alguna de las 5 encuestas. Resultados: Tras disminuir de forma uniforme entre 1987 y 1996, en 1999 se observa un aumento del 13,4% en el consumo regular (diario o semanal de tabaco y del 38,7% en el consumo experimental de tabaco, respecto a las prevalencias observadas en 1996. Con respecto al consumo de alcohol, se observa una disminución global del 14% de los escolares que ha bebido al menos medio vaso de alcohol entre 1987 y 1999. El consumo problemático de alcohol se iguala en ambos sexos, y la proporción que declara haberse emborrachado alguna vez es en 1999 superior en las chicas (14,0% que en los chicos (10,5%. Mientras en 1996 un 6,9% declaraba haber probado cannabis, la proporción en 1999, sin diferencias entre sexos, era del 7,3% de la población estudiada. Conclusiones: En el período estudiado se observa un aumento del consumo regular de tabaco, una disminución del consumo de alcohol y una estabilización del consumo de cannabis. Las diferencias entre ambos sexos tienden a desaparecer.Objective: To describe trends in tobacco, alcohol, and cannabis consumption among secondary school pupils in Barcelona between 1987 and 1999. Methods: Cross-sectional surveys administered to representative samples of pupils in the second year of secondary school between 1987 and 1999. The questionnaires were anonymous and self-completed. We present data from 5013 secondary school pupils from Barcelona who participated in one of the five surveys. Results: Regular smoking (daily and weekly showed a

  14. Geochemical signature and phytoremediation of urban soil: a case in Barcelona city

    Science.gov (United States)

    Rodríguez-Bocanegra, Javier; Roca, Núria; Febrero, Anna; Bort, Jordi

    2016-04-01

    The cleanup of contaminated places with heavy metals is necessary, but environmental remediation strategies are often expensive and energy consuming. Thus, it is important to develop low-cost and environmentally friendly strategies. Phytoremediation-based technologies could provide a long-lasting solution. The study area is located in Sants, a neighbourhood in Barcelona city (Catalonia, Spain). This place was an industrial area in the last century, which was occupied by a metal smelting industry. Nowadays, the neighbours want to cultivate vegetables in this location, but the history of this area suggests that the soil is polluted by elevated concentrations of heavy metals. The aim of this work was to determine heavy metal concentration in: a) soil, to know the degree of the soil pollution; b) roots and leaves of two plant species, Brassica juncea as an accumulator plant and Solanum lycopersicum as a crop plant, to know the capacity of each species to accumulate metals, and c) drainage water, to evaluate the heavy metal mobility. The main pollutants are Cu, Pb and Zn with topsoil total concentrations about 1355, 2230 and 6239 mg•kg-1, respectively. The established background upper limits in this area in mg•kg-1 were: Cu 145, Pb 91 and Zn 326. The same soil elements for available fractions, extracted with DTPA, were slightly elevated (9.6, 5.8 and 6.7 % of total concentration). The environmental pollution implies great extractability, suggesting the plants in these soils have facility with potentially toxic elements absorption. Instead, the concentrations in subsoil are lower than in topsoil. The concentrations of Cu, Pb and Zn in the plants' leaves are greater in B. juncea 170 ± 52.7, 137 ± 46.3 and 2365 ± 860.4 mg•kg-1, than in S. lycopersicum 102.5 ± 7.1, 22.5 ± 1.3 and 1002 ± 85.2 mg•kg-1 respectively. Furthermore, they are also greater in roots than in leaves. All of them are lower than the threshold to be considered like a hyperaccumulator species

  15. La comunicación digital del FC Barcelona y del Real Madrid CF y su percepción por los periodistas deportivos / Digital communication of FC Barcelona and Real Madrid CF and its perception by sports journalists

    Directory of Open Access Journals (Sweden)

    Fernando Olabe Sánchez

    2012-12-01

    Full Text Available ResumenEl FC Barcelona y el Real Madrid CF han cambiado su modelo de gestión comunicativa, especialmente en su relación con los medios de comunicación. Favorecidos por la implantación de las TIC, los departamentos de Comunicación de estas entidades se constituyen en gatekeeper al controlar y emitir, a través de sus propios medios de comunicación, como las televisiones y radios propias y los soportes online, las informaciones que ellos mismos generan. De este modo, controlan los mensajes y los emiten directamente a sus públicos objetivos sin la intermediación de los medios convencionales, condicionando las rutinas productivas de los periodistas deportivos.El objetivo de este trabajo es mostrar la percepción que estos profesionales tienen sobre las diferentes herramientas y soportes online que los departamentos de Comunicación de estos clubes emplean en su actividad diaria con los medios.AbstractThe FC Barcelona and Real Madrid CF have changed their communicative management model, especially in its relationship with the media. Favored by the introduction of ICT, Communication departments of these entities constitute gatekeeper to control and issue, through their own media, such as television and radio stations and media own online, the information that they generate. Thus, controlling broadcast messages and their target audiences directly without the intermediation of the mainstream media, conditioning routines productive sports journalists.The aim of this paper is to show the perception that these professionals have about the different tools and online media Communication departments to use these clubs in their daily activities with the media.

  16. Estima de la abundancia de Palomas (Columba livia var.) de la ciudad de Barcelona y valoración de la efectividad del control por eliminación de individuos

    OpenAIRE

    Senar, J. C.; Carrillo, J; Arroyo, L.; Montalvo, T.; Peracho, V.

    2009-01-01

    Estimate of the abundance of pigeons (Columba livia var.) in the city of Barcelona and evaluation of effectiveness of elimination measures Culling is one of the most commonly used methods to control urban pigeon populations. The Barcelona Public Health Agency (ASPB) eliminated a total of 227,479 pigeons using this technique between 1991 and 2006. We compared the estimate of abundance of pigeons in Barcelona city in 1991 (183.667 ± 14.914) with that in 2006 ( 256.663 ± 26.210) (CI 95%). Whi...

  17. Análisis de la intervención docente en psicomotricidad en escuelas infantiles de Barcelona

    OpenAIRE

    Simo, Alexandra

    2012-01-01

    Este trabajo trata sobre el análisis de la intervención docente en el área de la psicomotricidad en diferentes escuelas de Barcelona. Dichas escuelas han sido elegidas por tener idearios pedagógicos distintos a las escuelas más habituales, de metodología más tradicional. Las escuelas de las que se ha realizado un análisis de la intervención han sido las de pedagogos como María Montessori, Jean Piaget, Decroly y Waldorf. Así pues, se ha comparado la intervención docente a través de un cuest...

  18. The importance of the online communication in managing events : the case of the Barcelona Festival of Song

    OpenAIRE

    Arantes, João Carlos de Pereira Ferreira e Silva

    2014-01-01

    A nossa dissertação, centra-se na importância da comunicação online relativamente à gestão de eventos, principalmente no processo de comunicação do Barcelona Festival of Song, uma vez que grande parte deste processo se realiza através de meios online. Fator que muito atraiu a nossa atenção e nos levou a proceder ao seu estudo através de uma auditoria de comunicação A nova grande revolução do mundo da comunicação deu-se com o aparecimento da internet e de todos os seus meios ...

  19. HIV vaccine trial willingness among injection and non-injection drug users in two urban centres, Barcelona and San Francisco.

    Science.gov (United States)

    Etcheverry, M Florencia; Lum, Paula J; Evans, Jennifer L; Sanchez, Emilia; de Lazzari, Elisa; Mendez-Arancibia, Eva; Sierra, Ernesto; Gatell, José M; Page, Kimberly; Joseph, Joan

    2011-02-24

    Being able to recruit high-risk volunteers who are also willing to consider future participation in vaccine trials are critical features of vaccine preparedness studies. We described data from two cohorts of injection- and non-injection drug users in Barcelona, Spain [Red Cross centre] and in San Francisco, USA, [UFO-VAX study] at high risk of HIV/HCV infection to assess behaviour risk exposure and willingness to participate in future preventive HIV vaccine trials. We successfully identified drug-using populations that would be eligible for future HIV vaccine efficacy trials, based on reported levels of risk during screening and high levels of willingness to participate. In both groups, Red Cross and UFO-VAX respectively, HCV infection was highly prevalent at baseline (41% and 34%), HIV baseline seroprevalence was 4.2% and 1.5%, and high levels of willingness were seen (83% and 78%). PMID:21241735

  20. Las Ramblas de Barcelona. Una aportación al estudio de ciudades mediterráneas

    OpenAIRE

    Ospina Tascón, Juan José

    2014-01-01

    La tesi es planteja com una aportació a l'estudi urbanístic de ciutats mediterrànies, que van créixer vinculades a rambles o rieres, l'exemple més significatiu el constitueixen les Rambles de Barcelona. L'objectiu de la tesi és analitzar el paper que han exercit les rambles en diferents períodes històrics, a partir de diferents funcions com a eix d’escorrentia, límit territorial, passeig o espai públic. La metodologia utilitzada va consistir en indagació literària, històrica i cartogràfica...

  1. Una aproximació a la comunitat xinesa de Barcelona a través de la medicina tradicional xinesa

    OpenAIRE

    Morera Casaponsa, Josep Ricard

    2014-01-01

    El pràcticum és una aproximació a la comunitat xinesa a través de la medicina tradicional xinesa. La línia de recerca és sobre temes de societat. Ens hem endinsat en la comunitat xinesa que viu i treballa a Barcelona. Per això ho hem analitzat i observat des de la perspectiva social i econòmica, en un primer terme, per a passar a continuació, i com a manifestació d'aquesta comunitat i del seu coneixement, a realitzar l'aprofundiment mitjançant la medicina tradicional xinesa, en concret la que...

  2. Entre el “publicity” y la gestión comunicativa integral. El caso del Fútbol Club Barcelona

    OpenAIRE

    Olabe Sánchez, Fernando

    2014-01-01

    El modelo comunicativo del FC Barcelona ha transitado desde la década de los 80, cuando comien¬za a profesionalizarse la gestión de la información de los clubes de fútbol en España, hasta la actualidad, donde ha integrado la dimensión de la marca en la estrategia de difusión ante sus públi¬cos objetivos. Para este trabajo se ha optado por una metodología cualitativa, con entrevistas en profundidad y una investigación empírica secundaria con fuentes bibliográficas y fuentes heme¬rográficas. Lo...

  3. Life cycle assessment of an intensive sewage treatment plant in Barcelona (Spain) with focus on energy aspects.

    Science.gov (United States)

    Bravo, L; Ferrer, I

    2011-01-01

    Life Cycle Assessment was used to evaluate environmental impacts associated to a full-scale wastewater treatment plant (WWTP) in Barcelona Metropolitan Area, with a treatment capacity of 2 million population equivalent, focussing on energy aspects and resources consumption. The wastewater line includes conventional pre-treatment, primary settler, activated sludge with nitrogen removal, and tertiary treatment; and the sludge line consists of thickening, anaerobic digestion, cogeneration, dewatering and thermal drying. Real site data were preferably included in the inventory. Environmental impacts of the resulting impact categories were determined by the CLM 2 baseline method. According to the results, the combustion of natural gas in the cogeneration engine is responsible for the main impact on Climate Change and Depletion of Abiotic Resources, while the combustion of biogas in the cogeneration unit accounts for a minor part. The results suggest that the environmental performance of the WWTP would be enhanced by increasing biogas production through improved anaerobic digestion of sewage sludge. PMID:22097019

  4. Reactor container

    International Nuclear Information System (INIS)

    A reactor container has a suppression chamber partitioned by concrete side walls, a reactor pedestal and a diaphragm floor. A plurality of partitioning walls are disposed in circumferential direction each at an interval inside the suppression chamber, so that independent chambers in a state being divided into plurality are formed inside the suppression chamber. The partition walls are formed from the bottom portion of the suppression chamber up to the diaphragm floor to isolate pool water in a divided state. Operation platforms are formed above the suppression chamber and connected to an access port. Upon conducting maintenance, inspection or repairing, a pump is disposed in the independent chamber to transfer pool water therein to one or a plurality of other independent chambers to make it vacant. (I.N.)

  5. Reactor building

    International Nuclear Information System (INIS)

    The present invention concerns a structure of ABWR-type reactor buildings, which can increase the capacity of a spent fuel storage area at a low cost and improved earthquake proofness. In the reactor building, the floor of a spent fuel pool is made flat, and a depth of the pool water satisfying requirement for shielding is ensured. In addition, a depth of pool water is also maintained for a equipment provisionally storing pool for storing spent fuels, and a capacity for a spent fuel storage area is increased by utilizing surplus space of the equipment provisionally storing pool. Since the flattened floor of the spent fuel pool is flushed with the floor of the equipment provisionally storing pool, transfer of horizontal loads applied to the building upon occurrence of earthquakes is made smooth, to improve earthquake proofness of the building. (T.M.)

  6. Nuclear reactors

    International Nuclear Information System (INIS)

    Disclosed is a nuclear reactor cooled by a freezable liquid has a vessel for containing said liquid and comprising a structure shaped as a container, and cooling means in the region of the surface of said structure for effecting freezing of said liquid coolant at and for a finite distance from said surface for providing a layer of frozen coolant on and supported by said surface for containing said liquid coolant. In a specific example, where the reactor is sodium-cooled, the said structure is a metal-lined concrete vault, cooling is effected by closed cooling loops containing NaK, the loops extending over the lined surface of the concrete vault with outward and reverse pipe runs of each loop separated by thermal insulation, and air is flowed through cooling pipes embedded in the concrete behind the metal lining. 7 claims, 3 figures

  7. Indoor/outdoor relationships and mass closure of quasi-ultrafine, accumulation and coarse particles in Barcelona schools

    Science.gov (United States)

    Viana, M.; Rivas, I.; Querol, X.; Alastuey, A.; Sunyer, J.; Álvarez-Pedrerol, M.; Bouso, L.; Sioutas, C.

    2014-05-01

    The mass concentration, chemical composition and sources of quasi-ultrafine (quasi-UFP, PM0.25), accumulation (PM0.25-2.5) and coarse mode (PM2.5-10) particles were determined in indoor and outdoor air at 39 schools in Barcelona (Spain). Quasi-UFP mass concentrations measured (25.6 μg m-3 outdoors, 23.4 μg m-3 indoors) are significantly higher than those reported in other studies, and characterised by higher carbonaceous and mineral matter contents and a lower proportion of secondary inorganic ions. Results suggest that quasi-UFPs in Barcelona are affected by local sources in the schools, mainly human activity (e.g. organic material from textiles, etc., contributing 23-46% to total quasi-UFP mass) and playgrounds (in the form of mineral matter, contributing about 9% to the quasi-UFP mass). The particle size distribution patterns of toxicologically relevant metals and major aerosol components was characterised, displaying two modes for most elements and components, and one mode for inorganic salts (ammonium nitrate and sulfate) and elemental carbon (EC). Regarding metals, Ni and Cr were partitioned mainly in quasi-UFPs and could thus be of interest for epidemiological studies, given their high redox properties. Exposure of children to quasi-UFP mass and chemical species was assessed by comparing the concentrations measured at urban background and traffic areas schools. Finally, three main indoor sources across all size fractions were identified by assessing indoor / outdoor ratios (I / O) of PM species used as their tracers: human activity (organic material), cleaning products, paints and plastics (Cl- source), and a metallic mixed source (comprising combinations of Cu, Zn, Co, Cd, Pb, As, V and Cr). Our results support the need to enforce targeted legislation to determine a minimum "safe" distance between major roads and newly built schools to reduce exposure to traffic-derived metals in quasi-UFPs.

  8. Tendencias en el consumo de tabaco, alcohol y cannabis de los escolares de Barcelona (1987-1999

    Directory of Open Access Journals (Sweden)

    Ariza C.

    2003-01-01

    Full Text Available Objetivo: Describir las tendencias en el consumo de tabaco, alcohol y cannabis entre los adolescentes escolarizados entre 1987 y 1999 de la ciudad de Barcelona. Métodos: Encuestas transversales realizadas a muestras representativas de escolares de segundo curso de Educación Secundaria Obligatoria (ESO entre 1987 y 1999. Los cuestionarios eran anónimos y autocontestados. Se dispone de datos de 5.013 escolares de la ciudad de Barcelona que participan en alguna de las 5 encuestas. Resultados: Tras disminuir de forma uniforme entre 1987 y 1996, en 1999 se observa un aumento del 13,4% en el consumo regular (diario o semanal de tabaco y del 38,7% en el consumo experimental de tabaco, respecto a las prevalencias observadas en 1996. Con respecto al consumo de alcohol, se observa una disminución global del 14% de los escolares que ha bebido al menos medio vaso de alcohol entre 1987 y 1999. El consumo problemático de alcohol se iguala en ambos sexos, y la proporción que declara haberse emborrachado alguna vez es en 1999 superior en las chicas (14,0% que en los chicos (10,5%. Mientras en 1996 un 6,9% declaraba haber probado cannabis, la proporción en 1999, sin diferencias entre sexos, era del 7,3% de la población estudiada. Conclusiones: En el período estudiado se observa un aumento del consumo regular de tabaco, una disminución del consumo de alcohol y una estabilización del consumo de cannabis. Las diferencias entre ambos sexos tienden a desaparecer.

  9. Epidemiological characteristics and predictors of late presentation of HIV infection in Barcelona (Spain during the period 2001-2009

    Directory of Open Access Journals (Sweden)

    Guelar Ana

    2011-07-01

    Full Text Available Abstract Background Early diagnosis of HIV infection can prevent morbidity and mortality as well as reduce HIV transmission. The aim of the present study was to assess prevalence, describe trends and identify factors associated with late presentation of HIV infection in Barcelona (Spain during the period 2001-09. Methods Demographic and epidemiological characteristics of cases reported to the Barcelona HIV surveillance system were analysed. Late presentation was defined for individuals with a CD4 count below 350 cells/ml upon HIV diagnosis or diagnosis of AIDS within 3 months of HIV diagnosis. Multivariate logistic regression were used to identify predictors of late presentation. Results Of the 2,938 newly diagnosed HIV-infected individuals, 2,507 (85,3% had either a CD4 cell count or an AIDS diagnosis available. A total of 1,139 (55.6% of the 2,507 studied cases over these nine years were late presenters varying from 48% among men who have sex with men to 70% among heterosexual men. The proportion of late presentation was 62.7% in 2001-2003, 51.9% in 2004-2005, 52.6% in 2006-2007 and 52.1% in 2008-2009. A decrease over time only was observed between 2001-2003 and 2004-2005 (p = 0.001 but remained constant thereafter (p = 0.9. Independent risk factors for late presentation were older age at diagnosis (p Conclusion Late presentation of HIV is still too frequent in all transmission groups in spite of a strong commitment with HIV prevention in our city. It is necessary to develop interventions that increase HIV testing and facilitate earlier entry into HIV care.

  10. Temporal variation analysis of radon progeny ratio behavior in outdoor air at two radiometeorological stations in Barcelona and Madrid

    International Nuclear Information System (INIS)

    Full text: This work studies the concentration ratio of radon progeny (218Po, 214Pb and 214Bi) in outdoor air at two radiometeorological stations. Radon daughter concentrations were measured continuously every hour using our own detector unit based on alpha spectroscopy of radon progeny activity deposited on a filter. The flow rate was approximately 5 m3h-1. The sampled air was drawn through a 5-mm slit between a 2000 - mm2 alpha CAM PIPS detector and a 1.2-μm pore nitrate cellulose membrane filter. An electronic circuit and a microcontroller processes the detector signal in order to discriminate the energy from the alpha particles. Measurements were done at the ESMERALDA station in the Research Centre for Energy, Environment and Technology (CIEMAT) premises in Madrid for a period of one week, and in the Institute of Energy Technologies (INTE) premises at the Technical University of Catalonia (UPC) in Barcelona, where is usually located. At both stations the ratios vary with meteorological conditions basically depending on atmospheric turbulence, however their behavior is quite different due to non-uniform radon exhalation rate from soil. In Madrid, spurious high disequilibriums are observed because a radon source is located near the station. When the wind blows from the source, the 218Po concentrations increase significantly while 214Pb and 214Bi do not increase as much. In Barcelona often ratios greater than one are observed and are still under investigation. Finally, one of the applications of the study is that it can explain the background signal in the artificial radioactivity aerosol monitors used in the Spanish radiological surveillance networks (BAI 9850 from the Berthold Company). (author)

  11. Estructura metálica del edificio social de la Mutua General de Seguros Barcelona – España

    Directory of Open Access Journals (Sweden)

    Busquets, Xavier

    1977-10-01

    Full Text Available This describes the solution adopted for the Mutua General de Seguros structure on the Diagonal in Barcelona. The building consists of six general basements and two elevated wings, one of thirteen stories and another of four, joined together on the third and second floors. The problems which had to be overcome were various in nature: from anchoring the concrete blocks in the underground floors to achieving maximum clear space —there are no intermediate supports on the office floors— this was achieved satisfactorily, on the higher floors by means of large span porticos, made up of two well-defined parts (the ground floor portico and the upper floor assembly], from both a structural and esthetic point of view.Se describe la solución adoptada para estructura de la Mutua General de Seguros, en la Diagonal de Barcelona. El edificio se compone de seis sótanos generales y dos bloques elevados, uno de trece plantas y otro de cuatro, debidamente enlazados por la segunda y tercera. Los problemas planteados fueron de muy diversa índole: desde la sujeción de las pantallas de hormigón de las plantas enterradas, hasta la consecución de la máxima diafanidad —en todas las plantas de oficinas no existen soportes intermedios— en las plantas altas a base de pórticos de gran luz, compuestos de dos partes bien definidas (el pórtico de planta baja y el conjunto de las superiores y acertadamente resueltos, desde el doble punto de vista estructural y estético.

  12. NEUTRONIC REACTORS

    Science.gov (United States)

    Anderson, J.B.

    1960-01-01

    A reactor is described which comprises a tank, a plurality of coaxial steel sleeves in the tank, a mass of water in the tank, and wire grids in abutting relationship within a plurality of elongated parallel channels within the steel sleeves, the wire being provided with a plurality of bends in the same plane forming adjacent parallel sections between bends, and the sections of adjacent grids being normally disposed relative to each other.

  13. Nuclear reactor

    International Nuclear Information System (INIS)

    The liquid metal (sodium) cooled fast breeder reactor has got fuel subassemblies which are bundled and enclosed by a common can. In order to reduce bending of the sides of the can because of the load caused by the coolant pressure the can has got a dodecagon-shaped crosssection. The surfaces of the can may be of equal width. One out of two surfaces may also be convex towards the center. (RW)

  14. Nuclear reactor

    International Nuclear Information System (INIS)

    A detector having high sensitivity to fast neutrons and having low sensitivity to thermal neutrons is disposed for reducing influences of neutron detector signals on detection values of neutron fluxes when the upper end of control rod pass in the vicinity of the neutron flux detector. Namely, the change of the neutron fluxes is greater in the thermal neutron energy region while it is smaller in the fast neutron energy region. This is because the neutron absorbing cross section of B-10 used as neutron absorbers of control rods is greater in the thermal neutron region and it is smaller in the fast neutron region. As a result, increase of the neutron detection signals along with the local neutron flux change can be reduced, and detection signals corresponding to the reactor power can be obtained. Even when gang withdrawal of operating a plurality of control rods at the same time is performed, the reactor operation cycle can be measured accurately, thereby enabling to shorten the reactor startup time. (N.H.)

  15. Impacto del tabaquismo y del consumo excesivo de alcohol en la mortalidad de la población de la ciudad de Barcelona: 1983-1998 Impact of smoking and alcohol consumption on mortality in the population of Barcelona [Spain]: 1983-1998

    OpenAIRE

    Jané, M; Borrell, C.; M. Nebot(Centro de Física Teórica de Partículas, and Departamento de Física, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal); M. I. Pasarín

    2003-01-01

    Objetivos: Analizar la mortalidad atribuible al tabaquismo y al consumo excesivo de alcohol, así como su evolución, en la ciudad de Barcelona entre 1983 y 1998. Métodos: Se incluyen todas las defunciones de las personas residentes en Barcelona desde 1983 a 1998. Los datos poblacionales se han obtenido de los Padrones de Habitantes. La mortalidad atribuible al tabaquismo y al consumo de alcohol se obtiene calculando las Fracciones Atribuibles Poblacionales a partir de los riesgos relativos de ...

  16. Reactor core of nuclear reactor

    International Nuclear Information System (INIS)

    In a BWR type nuclear reactor, the number of first fuel assemblies (uranium) loaded in a reactor core is smaller than that of second fuel assemblies (mixed oxide), the average burnup degree upon take-out of the first fuel assemblies is reduced to less than that of the second fuel assemblies, and the number of the kinds of the fuel rods constituting the first fuel assemblies is made smaller than that of the fuel rods constituting the second fuel assemblies. As a result, the variety of the plutonium enrichment degree is reduced to make the distribution of the axial enrichment degree uniform, thereby enabling to simplify the distribution of the enrichment degree. Then the number of molding fabrication steps for MOX fuel assemblies can be reduced, thereby enabling to reduce the cost for molding and fabrication. (N.H.)

  17. El pressupost de cultura de l'Ajuntament de Barcelona de 1908: un referent pedagògic The 1908 Budget of the Culture Office of the Barcelona City Council: A Pedagogical Reference El presupuesto de Cultura del Ayuntamiento de Barcelona de 1908: un referente pedagógico

    Directory of Open Access Journals (Sweden)

    Raquel de la Arada Acebes

    2008-01-01

    Full Text Available En aquest article l'autora revisa la gènesi i evolució del pressupost de Cultura de l'Ajuntament de Barcelona de 1908 que, entre altres aspectes, proposava una escola pública de qualitat, a càrrec del municipi, amb els següents principis pedagògics: coeducació, ensenyament en llengua catalana i neutralitat religiosa. La difícil conjuntura política del moment va impedir que aquest pressupost reexís després d'una llarga disputa pública i social. Ben mirat, aquell projecte obeïa a una política cultural de l'esquerra catalanista i republicana que es movia ideològicament en l'òrbita del modernisme cultural i pedagògicament, en el moviment renovador de l'Escola Nova, que va arrelar amb força a casa nostra, amb l'ajut i col·laboració de la Institución Libre de Enseñanza. En conseqüència, el Pressupost Extraordinari de Cultura era el resultat d'una mentalitat basada en una política cultural que havia de proporcionar a la ciutat de Barcelona -i per extensió, a tot Catalunya- un model d'escola pública adequat als criteris del modernisme cultural i del regeneracionisme polític. ______________________________________________________________________________________________________________________________________________________________________________________ Dans cet article, l'auteur révise la genèse ainsi que l'évolution du budget de la culture de la Mairie de Barcelone de l'année 1908 qui proposait, entre autres aspects, une école publique de qualité, à la charge de la municipalité, et qui envisageait les principes pédagogiques suivants: coéducation, enseignement en langue catalane et neutralité religieuse. La difficile conjoncture politique du moment empêcha l'exécution de ce budget, après une longue querelle publique et sociale. Tout bien considéré, ce projet obéissait à une politique culturelle de la gauche catalaniste et républicaine qui se déplaçait idéologiquement dans la sphère du modernisme

  18. A Complex Small RNA Repertoire Is Generated by a Plant/Fungal-Like Machinery and Effected by a Metazoan-Like Argonaute in the Single-Cell Human Parasite Toxoplasma gondii

    Science.gov (United States)

    Ortet, Philippe; Barakat, Mohamed; Sautel, Céline F.; Kieffer, Sylvie; Garin, Jérôme; Bastien, Olivier; Voinnet, Olivier; Hakimi, Mohamed-Ali

    2010-01-01

    In RNA silencing, small RNAs produced by the RNase-III Dicer guide Argonaute-like proteins as part of RNA-induced silencing complexes (RISC) to regulate gene expression transcriptionally or post-transcriptionally. Here, we have characterized the RNA silencing machinery and exhaustive small RNAome of Toxoplasma gondii, member of the Apicomplexa, a phylum of animal- and human-infecting parasites that cause extensive health and economic damages to human populations worldwide. Remarkably, the small RNA-generating machinery of Toxoplasma is phylogenetically and functionally related to that of plants and fungi, and accounts for an exceptionally diverse array of small RNAs. This array includes conspicuous populations of repeat-associated small interfering RNA (siRNA), which, as in plants, likely generate and maintain heterochromatin at DNA repeats and satellites. Toxoplasma small RNAs also include many microRNAs with clear metazoan-like features whose accumulation is sometimes extremely high and dynamic, an unexpected finding given that Toxoplasma is a unicellular protist. Both plant-like heterochromatic small RNAs and metazoan-like microRNAs bind to a single Argonaute protein, Tg-AGO. Toxoplasma miRNAs co-sediment with polyribosomes, and thus, are likely to act as translational regulators, consistent with the lack of catalytic residues in Tg-AGO. Mass spectrometric analyses of the Tg-AGO protein complex revealed a common set of virtually all known RISC components so far characterized in human and Drosophila, as well as novel proteins involved in RNA metabolism. In agreement with its loading with heterochromatic small RNAs, Tg-AGO also associates substoichiometrically with components of known chromatin-repressing complexes. Thus, a puzzling patchwork of silencing processor and effector proteins from plant, fungal and metazoan origin accounts for the production and action of an unsuspected variety of small RNAs in the single-cell parasite Toxoplasma and possibly in other

  19. Types of Nuclear Reactors

    International Nuclear Information System (INIS)

    The presentation is based on the following areas: Types of Nuclear Reactors, coolant, moderator, neutron spectrum, fuel type, pressurized water reactor (PWR), boiling water reactor (BWR) reactor pressurized heavy water (PHWR), gas-cooled reactor, RBMK , Nuclear Electricity Generation,Challenges in Nuclear Technology Deployment,EPR, APR1400, A P 1000, A PWR, ATMEA 1, VVER-1000, A PWR, VVER 1200, Boiling Water Reactor, A BWR, A BWR -II, ESBUR, Ke ren, AREVA, Heavy Water Reactor, Candu 6, Acr-1000, HWR, Bw, Iris, CAREM NuCcale, Smart, KLT-HOS, Westinghouse small modular Reactor, Gas Cooled Reactors, PBMR.

  20. Nuclear reactor

    International Nuclear Information System (INIS)

    A nuclear reactor is described in which the core components, including fuel-rod assemblies, control-rod assemblies, fertile rod-assemblies, and removable shielding assemblies, are supported by a plurality of separate inlet modular units. These units are referred to as inlet module units to distinguish them from the modules of the upper internals of the reactor. The modular units are supported, each removable independently of the others, in liners in the supporting structure for the lower internals of the reactor. The core assemblies are removably supported in integral receptacles or sockets of the modular units. The liners, units, sockets and assemblies have inlet openings for entry of the fluid. The modular units are each removably mounted in the liners with fluid seals interposed between the opening in the liner and inlet module into which the fluid enters in the upper and lower portion of the liner. Each assembly is similarly mounted in a corresponding receptacle with fluid seals interposed between the openings where the fluid enters in the lower portion of the receptacle or fitting closely in these regions. As fluid flows along each core assembly a pressure drop is produced along the fluid so that the fluid which emerges from each core assembly is at a lower pressure than the fluid which enters the core assembly. However because of the seals interposed in the mountings of the units and assemblies the pressures above and below the units and assemblies are balanced and the units are held in the liners and the assemblies are held in the receptacles by their weights as they have a higher specific gravity than the fluid. The low-pressure spaces between each module and its liner and between each core assembly and its module is vented to the low-pressure regions of the vessel to assure that fluid which leaks through the seals does not accumulate and destroy the hydraulic balance

  1. Nuclear research reactors

    International Nuclear Information System (INIS)

    It's presented data about nuclear research reactors in the world, retrieved from the Sien (Nuclear and Energetic Information System) data bank. The information are organized in table forms as follows: research reactors by countries; research reactors by type; research reactors by fuel and research reactors by purpose. (E.G.)

  2. Nuclear reactor physics course for reactor operators

    International Nuclear Information System (INIS)

    The education and training of nuclear reactor operators is important to guarantee the safe operation of present and future nuclear reactors. Therefore, a course on basic 'Nuclear reactor physics' in the initial and continuous training of reactor operators has proven to be indispensable. In most countries, such training also results from the direct request from the safety authorities to assure the high level of competence of the staff in nuclear reactors. The aim of the basic course on 'Nuclear Reactor Physics for reactor operators' is to provide the reactor operators with a basic understanding of the main concepts relevant to nuclear reactors. Seen the education level of the participants, mathematical derivations are simplified and reduced to a minimum, but not completely eliminated

  3. Correlatos psicosociales de la adhesión al tratamiento antirretroviral en el Centro Penitenciario de hombres de Barcelona Psychosocial correlates of the adherence to antirretroviral treatment of men in penitentiary center of Barcelona

    Directory of Open Access Journals (Sweden)

    F. Herraiz

    2008-02-01

    Full Text Available Objetivo: Evaluar la adhesión terapéutica al TARGA de los pacientes reclusos con VIH y su relación con diferentes tipos de variables. Material y Método: Estudio longitudinal, realizado en el Centro Penitenciario de Hombres de Barcelona. Se utilizaron las bases de datos del centro, una entrevista semiestructurada, que valoraba variables sociodemográficas, penales/penitenciarias, clínicas y características del tratamiento, así como cuestionarios sobre creencias y estados emocionales. También se evaluó la adhesión al inicio del estudio, a los tres y a los seis meses. Resultados: Los internos presentaron un bajo apoyo social; un acuerdo medio respecto de los cuidados recibidos por el personal médico y sanitario; consideraron la complejidad del tratamiento como alta y concedieron una moderada relevancia a los efectos secundarios; presentaron un elevado acuerdo respecto a los beneficios que les podían reportar seguir el tratamiento, una percepción moderada sobre la severidad de la enfermedad y manifestaron una elevada autoeficacia en el seguimiento del tratamiento. Respecto a las variables emocionales mostraron una baja tensión, depresión, cólera y fatiga. La adhesión a los antirretrovirales desde el inicio al final del estudio no ha variado a lo largo del estudio. Las variables socio-cognitivas que correlacionaron con la adhesión en los diferentes momentos del estudio son la autoeficacia, los beneficios percibidos, la complejidad del tratamiento y los efectos secundarios. Los estados emocionales que correlacionaban con la adhesión eran la depresión y la fatiga. Discusión: La relación entre autoeficacia y adhesión es un resultado repetido en los estudios sobre la predicción de la adhesión al TARGA. Las relaciones de la fatiga y de la tristeza/depresión con la adhesión son del tipo esperado.Objective: to assess therapeutic adherence to HAART amongst HIV positive inmates and its likely relationship with sets of different

  4. Nuclear reactor

    International Nuclear Information System (INIS)

    Cover gas spaces for primary coolant vessel, such as a reactor container, a pump vessel and an intermediate heat exchanger vessel are in communication with each other by an inverted U-shaped pressure conduit. A transmitter and a receiver are disposed to the pressure conduit at appropriate positions. If vibration frequencies (pressure vibration) from low frequency to high frequency are generated continuously from the transmitter to the inside of the communication pipe, a resonance phenomenon (air-column resonance oscillation) is caused by the inherent frequency or the like of the communication pipe. The frequency of the air-column resonance oscillation is changed by the inner diameter and the clogged state of the pipelines. Accordingly, by detecting the change of the air-column oscillation characteristics by the receiver, the clogged state of the flow channels in the pipelines can be detected even during the reactor operation. With such procedures, steams of coolants flowing entrained by the cover gases can be prevented from condensation and coagulation at a low temperature portion of the pipelines, otherwise it would lead clogging in the pipelines. (I.N.)

  5. El tabaco en los establecimientos de restauración y hostelería: estudio observacional en Barcelona, 2008 Smoking in the hospitality sector: an observational study in Barcelona (Spain, 2008

    Directory of Open Access Journals (Sweden)

    Joan R. Villalbí

    2010-01-01

    Full Text Available Objetivos: Describir la situación real del consumo de tabaco en los locales de restauración y hostelería tras la ley de medidas sanitarias frente al tabaquismo, que establece exenciones en este sector a la prohibición general de fumar en el trabajo desde 2006. Métodos Estudio observacional descriptivo en Barcelona en 2008, con muestreo por conglomerados de 1130 establecimientos. Se presentan los resultados estratificados por tipo de establecimiento. Resultados: En el 85,7% de los comercios con degustación (panaderías, pastelerías… y el 85% de los locales de comida rápida se prohíbe fumar. El 40% de los restaurantes son libres de humo u ofrecen zonas separadas. En los bares-cafeterías y cafeterías-restaurantes (locales más abundantes no se suele prohibir fumar. Hay mayor oferta de locales sin humo en los distritos céntricos y centros comerciales. Conclusiones: En un 75,4% de los locales se permite fumar libremente. Estos resultados muestran las limitaciones de la ley.Objectives: To describe the actual presence of smoking in restaurant and hospitality premises after the smoking prevention act banning smoking in workplaces came into force in 2006, with wide exemptions in this sector. Methods: We performed an observational, descriptive study in Barcelona (Catalonia, Spain in 2008 based on cluster sampling, with 1130 premises. The results were stratified by premise type. Results: Up to 85.7% of food shops allowing consumption within their premises (bakeries, pastry shops… ban smoking, as well as 85% of fast food establishments. Among restaurants, 40% are smoke-free or have separate smoking areas. Bar-cafés and café-restaurants (the most abundant premises usually allow smoking. There are more smoke-free options in central districts and in shopping malls. Conclusions: Up to 75.4% of all premises allow smoking freely. These results show the limitations of the law.

  6. ¿Por qué Barcelona? : Análisis de la evolución del turismo en la ciudad

    OpenAIRE

    Batista Terrones, Elena; Buenamañana del Fresno, Marta; Cordero Codera, Irene; Martínez Domingo, Mª Cinta

    2012-01-01

    “El hotel vela de Ricardo Bofill echa por fin raíces en la nueva bocana” (ElPeriódico; 29 de mayo de 2006); “Bread&Butter deja en BCN 80 millones de euros” (ElPeriódico; 19 de enero de 2007); “Barcelona promociona su oferta de playas en todo elmundo” (El Periódico; 25 de marzo de 2007);… En las portadas y páginas de diarios ygacetas es donde comenzó todo, donde nació y se gestó una idea que posteriormentepasaría a ser nuestro proyecto final.Durante los últimos años la ciudad de Barcelona ha v...

  7. Hybrid adsorptive membrane reactor

    Science.gov (United States)

    Tsotsis, Theodore T. (Inventor); Sahimi, Muhammad (Inventor); Fayyaz-Najafi, Babak (Inventor); Harale, Aadesh (Inventor); Park, Byoung-Gi (Inventor); Liu, Paul K. T. (Inventor)

    2011-01-01

    A hybrid adsorbent-membrane reactor in which the chemical reaction, membrane separation, and product adsorption are coupled. Also disclosed are a dual-reactor apparatus and a process using the reactor or the apparatus.

  8. Hybrid adsorptive membrane reactor

    Science.gov (United States)

    Tsotsis, Theodore T.; Sahimi, Muhammad; Fayyaz-Najafi, Babak; Harale, Aadesh; Park, Byoung-Gi; Liu, Paul K. T.

    2011-03-01

    A hybrid adsorbent-membrane reactor in which the chemical reaction, membrane separation, and product adsorption are coupled. Also disclosed are a dual-reactor apparatus and a process using the reactor or the apparatus.

  9. Presence of emerging contaminants priority substances and heavy metals in treated wastewater and groundwater in the Llobregat delta area (Barcelona, Spain)

    OpenAIRE

    Teijón Ávila, Gloria; Tamoh, Karim; Candela Lledó, Lucila

    2011-01-01

    Initial sampling results of emerging contaminants at the Llobregat delta deep aquifer (Barcelona, Spain) are presented. Among micro contaminants selected are 82 pharmaceuticals (antibiotics, lipid regulation agents, analgesic/anti-inflammatory drugs, etc), 18 personal care products (sunscreen agents, preservatives and disinfectants/antiseptics), 4 metals, 44 pesticides, 6 volatile priority pollutants, 16 PAHS and dioxins. Monitoring programme consisted on periodical water sampling from mun...

  10. Las asignaturas proyectos en el grado de comunicación audiovisual de la universitat de Barcelona: un ejemplo de evaluación por competencias

    OpenAIRE

    García Asensio, María Ángeles; Aguilar Paredes, Carlos; Romeo Delgado, Marina; Yepes Baldo, Montserrat; González Argüello, Vicenta; Sánchez Gómez, Lydia; Burset Burillo, Silvia; Berger, Rita, 1959-

    2011-01-01

    En este trabajo presentamos la propuesta de desarrollo de la materia Proyectos del Grado de Comunicación Audiovisual de la Universidad de Barcelona, que incluye las asignaturas Proyectos I y Proyectos II. Estas asignaturas son especialmente idóneas para desarrollar las competencias transversales del grado, dado que su objetivo es integrar las competencias adquiridas en el conjunto de asignaturas cursadas por los alumnos previamente, poniendo en relación los diferentes lengua...

  11. La labor de Enric Granados en el proceso de la recepción de la música de Bach en Barcelona

    OpenAIRE

    Bonastre, Francesc

    2001-01-01

    The musical personality of Enric Granados (1867-1916) includes many aspects, especially piano interpretation and symphonic, scenic, "liederistic" and piano composition, as well as pedagogy, together with the foundation of the Granados Academy (1900). He got to know Bach's music through Ch. W. Bériot in Paris and F. Pedrell in Barcelona. He spread Bach's music as a soloist, director and pedagogue, together with other important disciples of Pedrell: J. Albéniz, L. Millet and H. Angles. The arti...

  12. Excess Heat-Related Mortality in Micro-Urban Heat Islands: A Case-only Study in Barcelona. GI_Forum 2013 – Creating the GISociety|

    OpenAIRE

    Glutting, John-Paul

    2013-01-01

    Background: Extreme heat events (EHE) are of increasing public health concern. In urban areas, micro-urban heat islands (MUHI) raise the possibility of increased mortality risk. This study identified MUHI in the city of Barcelona, Spain, using Landsat 7 thermal infrared imagery and overlaid them onto at-home deaths between 2000-2003, identified from a mortality registry and geocoded using the Google API. Hot days were defined as days with mean minimum temperatures above the 90th percentile of...

  13. Assessment of the water chemistry and the macroinvertebrate community changes produced during the creation of the new Llobregat river mouth (Barcelona, NE Spain)

    OpenAIRE

    Cañedo-Argüelles, Miguel; Rieradevall i Sant, Maria

    2012-01-01

    In 1999, a set of coordinated projects and investments whose principal objective was to transform Barcelona into one of the main distribution points of southern Europe resulted in the relocation of the Llobregat River mouth. The mouth was relocated by draining the old river mouth and constructing a new one. The aim of this study was to characterise the physico-chemical properties and the aquatic macroinvertebrate communities of the new river mouth and to monitor the changes experienced by the...

  14. Les Polítiques Inmigratòries de la Unió Europea i el Procès de Barcelona.

    OpenAIRE

    Olivé Elias, Maria

    2007-01-01

    It would be necessary to question which aspects of the Barcelona Process are identified as the weakest and therefore need to be proposed a solution for improvement. Below, some appreciations are made with respect to all the EuroMediterranean Process, that must be taken into account when analyzed from a political or juridical point of view, and which are sometimes misregarded. Moreover, this research includes some general, political and juridical proposals, which have been elaborated in order ...

  15. Les relacions epistolars de les ciutats de Barcelona, València i Palma entre els segles XVI i XVII (c. 1510 – c. 1630

    Directory of Open Access Journals (Sweden)

    Vicent Baydal Sala

    2013-06-01

    Full Text Available Resum: L’article analitza les epístoles enviades pels Consells municipals de Barcelona, Valènciai Palma entre els segles XVI i XVII, a través de l’estudi detallat de tres talls cronològics triennalsentre 1510 i 1629. En concret, s’hi atén comparativament a quatre factors: les raons que motivaren la tramesa de cartes per part dels governs urbans, el tipus de destinataris a les quals s’adreçaren, la xarxa de connexions territorials que el seu enviament ocasionà i les formes epistolars emprades pels escrivans en la seua confecció. Així, s’hi pot observar que, compartint una mateixa cultura epistolar, l’activitat de cada Consell fou ben diversa en funció del seu propi poder polític i la seua relació amb la monarquia.Paraules clau: Epístoles, Edat Moderna, Barcelona, València, PalmaAbstract: This paper examines the epistles sent by the City Councils of Barcelona, Valènciaand Palma between the 16th and 17th centuries through the detailed study of three triennialchronological sections between 1510 and 1629. Specifically, it deals comparatively with four issues:the reasons that motivated the letters, the type of addressees, the network of territorial connectionsestablished by the sending of the letters and the epistolary forms used by the scribes. It is observedthat, sharing the same epistolary culture, the activity of each Council was very diverse dependingon its own political power and its relationship with the monarchy.Keywords: Epistles, Early Modern Ages, Barcelona, Valencia, Palma

  16. Marketing promocional de los servicios digitales y de los recursos de información de las bibliotecas y unidades del CRAI de la Universidad de Barcelona

    OpenAIRE

    Coll, Josep; Magdaleno, Isabel; Miró, Laura

    2007-01-01

    The main focus of the Marketing Group of the The Resource Center for Learning and Research (CRAI) of the University of Barcelona (UB) is to promote the services and resources of our libraries and units and to improve the use of the Digital Library. In this conference poster, the group explains how they work and show some samples of products used in different marketing campaigns.

  17. A divisão da cidade dos trabalhadores: espaço urbano, imigração e anarquismo no entreguerras. Barcelona, 1914-1936

    OpenAIRE

    2011-01-01

    Barcelona was the capital city of European anarchism during the interwar years. The aim of this article is to discover the sociological and territorial features of the radicalized CNT (a Confederación Nacional del Trabajo), the anarchist union, which generated the summer 1936 revolution. By looking at the role of urban space as a variable in the collective processes of the working class the article argues that the unskilled recent immigrant worker and the neighbourhoods where this working-cla...

  18. Aspectos metodológicos de las encuestas de salud por entrevista: aportaciones de la Encuesta de Salud de Barcelona 2006

    Directory of Open Access Journals (Sweden)

    Carme Borrell

    2008-05-01

    Full Text Available Las encuestas de salud son el procedimiento de elección para obtener información de la población de una determinada zona sobre fenómenos subjetivos relacionados con la salud tales como la existencia de síntomas actuales o pasados, limitaciones o incapacidades generadas por problemas de salud, hábitos personales, exposiciones a situaciones de riesgo. Este artículo tiene por objetivo presentar los pasos seguidos en el diseño de una encuesta de salud y explicar algunos de los instrumentos utilizados en la Encuesta de Barcelona de 2006. Se presentan las novedades de la Encuesta de Salud de Barcelona 2006 relacionadas con: la clase social neomarxista de EO Wright, los trabajos productivo y reproductivo, la inmigración extranjera, la discriminación percibida, la utilización de servicios sanitarios y finalmente, el cuestionario específico para menores.Health interview surveys are used to study subjective health problems of the population sucg as the existence of symptoms, limitations or disabilities generated by health problems, health behaviours, exposures, risk situations, etc. The objective of this article is to present the steps followed in the design of health interview surveys and to explain some of the aspects analyzed in the 2006 Barcelona Health Survey. It presents new aspects of the Barcelona Health Survey related to the neo-marxist social class of EO Wright, productive and reproductive labor, foreign immigration, perceived discrimination, health services utilization and, finally, health questionnaire for children.

  19. Characterisation of the CTX-M-15-encoding gene in Klebsiella pneumoniae strains from the Barcelona metropolitan area: plasmid diversity and chromosomal integration

    OpenAIRE

    Coelho, Alicia; González-López, Juan José; Miró, Elisenda; Alonso-Tarrés, Carles; Mirelis, Beatriz; Larrosa, María Nieves; Bartolomé, Rosa María; Andreu, Antonia; Navarro, Ferran; Johnson, James R.; Prats, Guillem

    2010-01-01

    Abstract The localisation and genetic organisation of blaCTX-M-15 were studied in 37 CTX-M-15-producing Klebsiella pneumoniae isolates collected from 2005 to 2008 within the Barcelona metropolitan area. Polymerase chain reaction (PCR)-based replicon typing and Southern hybridisations were used to identify the blaCTX-M-15 location. The genetic environment was analysed by PCR mapping and sequencing, and transferability of blaCTX-M-15 was evaluated by conjugation and transformation as...

  20. La labor de Enric Granados en el proceso de la recepción de la música de Bach en Barcelona

    Directory of Open Access Journals (Sweden)

    Bonastre, Francesc

    2001-12-01

    Full Text Available The musical personality of Enric Granados (1867-1916 includes many aspects, especially piano interpretation and symphonic, scenic, "liederistic" and piano composition, as well as pedagogy, together with the foundation of the Granados Academy (1900. He got to know Bach's music through Ch. W. Bériot in Paris and F. Pedrell in Barcelona. He spread Bach's music as a soloist, director and pedagogue, together with other important disciples of Pedrell: J. Albéniz, L. Millet and H. Angles. The article includes 14 concerts in Barcelona related to Granados (1895-1912.

    La personalidad musical de Enric Granados (1867-1916 comprende numerosas facetas, especialmente la interpretación pianística, la composición sinfónica, escénica, liederística y pianística, y la pedagogía, con la fundación de la Academia Granados (1900. Conoce la música de Bach a través de Ch. W. Bériot en París, y de F. Pedrell en Barcelona; se convierte en uno de los difusores de la música bachiana como concertista, director y pedagogo, al lado de otros destacados discípulos de Pedrell: I. Albéniz, L. Millet e H. Angles. El artículo recoge 14 conciertos barceloneses relacionados con Granados (1895-1912.

  1. Identification and quantification of organic aerosol from cooking and other sources in Barcelona using aerosol mass spectrometer data

    Directory of Open Access Journals (Sweden)

    C. Mohr

    2011-10-01

    Full Text Available PM1 (particulate matter with an aerodynamic diameter <1 μm non-refractory components and black carbon were measured continuously together with additional parameters at an urban background site in Barcelona, Spain, during March 2009 (campaign DAURE, Determination of the sources of atmospheric Aerosols in Urban and Rural Environments in the western Mediterranean. Positive matrix factorization (PMF was conducted on the organic aerosol (OA data matrix measured by an aerosol mass spectrometer, on both unit mass (UMR and high resolution (HR data. Five factors or sources could be identified: LV-OOA (low-volatility oxygenated OA, related to regional, aged secondary OA; SV-OOA (semi-volatile oxygenated OA, a fresher oxygenated OA; HOA (hydrocarbon-like OA, related to traffic emissions; BBOA (biomass burning OA from domestic heating or agricultural biomass burning activities; and COA (cooking OA. LV-OOA contributed 28% to OA, SV-OOA 27%, COA 17%, HOA 16%, and BBOA 11%. The COA HR spectrum contained substantial signal from oxygenated ions (O/C: 0.21 whereas the HR HOA spectrum had almost exclusively contributions from chemically reduced ions (O/C: 0.03. If we assume that the carbon in HOA is fossil while that in COA and BBOA is modern, primary OA in Barcelona contains a surprisingly high fraction (59% of non-fossil carbon.

    This paper presents a method for estimating cooking organic aerosol in ambient datasets based on the fractions of organic mass fragments at m/z 55 and 57: their data points fall into a V-shape in a scatter plot, with strongly influenced HOA data aligned to the right arm and strongly influenced COA data points aligned to the left arm. HR data show that this differentiation is mainly driven by the oxygen-containing ions C3H3O+ and C3H5O+, even though their contributions to m/z 55 and 57 are low compared to the reduced ions C4

  2. La reinvención de la política cultural a escala local: el caso de Barcelona

    Directory of Open Access Journals (Sweden)

    Arturo Rodríguez Morató

    2005-08-01

    Full Text Available Entre su voluntariosa instauración en los años 60 y el giro economicista que tuvo en la década de los 80, las políticas culturales cubrieron un ciclo de progresvo agotamiento y desestructuración. Pero esta devira supuso paralelamente umimportante realce de la política cultural local. Esta tendencia se vio luego muy potencial por el giro empreededor de la política urbana, que ha hecho de la cultura un elemento central de las nuevas estrategias de desarrollo territorial. Gracias a este impulso se está conformando últimamente un nuevo modelo de política cultural en el ámbito local que viene a sustituir al decliante paradigma clásico de las políticas culturales, que era de base nacional. El artículo muestra la lógica de este processo de sustitución y examina en concreto el proceso de reinvención de la política cultural a escala local. Este examen se centra en el caso de Barcelona, que es un caso ejemplar a este respecto.After its inception in the 1960's and until the economic turn of the 1980's, the cutural policy has completed a cycle of increasing debasement. However, at the same time, this evolution has also entailed an important enhancement of the local cultural policy. Afterwards, this trend has been even more exacerbated by the entrepreneurial turn of the urban policy, which has turned culture into a central element of the new strategies of territorial development. Thanks to this impulse, a new model of cultural policy is lately taking shape in the local sphere substituting the declining classical paradigm of cultural policy of national scope. The article shows the logic of this substitution process and examines, in particular, the cultural policy recreation process in the local sphere. This analysis focuses on the case of Barcelona, which is an exemplary case in the this regard.

  3. Reactor container

    International Nuclear Information System (INIS)

    Purpose: To prevent shocks exerted on a vent head due to pool-swell caused within a pressure suppression chamber (disposed in a torus configuration around the dry well) upon loss of coolant accident in BWR type reactors. Constitution: The following relationship is established between the volume V (m3) of a dry well and the ruptured opening area A (m2) at the boundary expected upon loss of coolant accident: V >= 30340 (m) x A Then, the volume of the dry well is made larger than the ruptured open area, that is, the steam flow rate of leaking coolants upon loss of coolant accident to decrease the pressure rise in the dry well at the initial state where loss of coolant accident is resulted. Accordingly, the pressure of non-compressive gases jetted out from the lower end of the downcomer to the pool water is decreased to suppress the pool-swell. (Ikeda, J.)

  4. EDITORIAL: Proceedings of the 7th International LISA Symposium, Barcelona, Spain, 16-20 June 2008 Proceedings of the 7th International LISA Symposium, Barcelona, Spain, 16-20 June 2008

    Science.gov (United States)

    Lobo, Alberto; Sopuerta, Carlos F.

    2009-05-01

    In June 2006 the LISA International Science Team (LIST) accepted the bid presented by the Institut d'Estudis Espacials de Catalunya (IEEC) to host the 7th International LISA Symposium. This was during its 11th meeting at the University of Maryland, just before the 6th edition of the symposium started at NASA's Goddard Space Flight Center. The 7th International LISA Symposium took place in the city of Barcelona, Spain, 16-20 June, 2008, in the premises of CosmoCaixa, a modern science museum located in the hills near Tibidabo. Almost 240 delegates registered for the event, a record breaking figure compared to previous editions of the symposium. Many of the most renowned world experts in LISA, gravitational wave science, and astronomy, as well as engineers, attended LISA #7 and produced state of the art presentations, while everybody benefited from the opportunity to have live discussions during the week in a friendly environment. The programme included 31 invited plenary lectures in the mornings, and eight parallel sessions in the afternoons. These were classified into seven major areas of research: LISA Technology, LISA PathFinder, LISA PathFinder Data Analysis, LISA Data Analysis, Gravitational Wave Sources, Cosmology and Fundamental Physics with LISA and Other Gravitational Wave Detectors. Abstracts for 138 communications were received, from which a selection was made by the session convenors which would fit time constraints. Up to 63 posters completed the scientific programme. More details on the programme, including some of the talks, can be found at the symposium website:http://www.ice.cat/research/LISA_Symposium. There was, however, a remarkable add-on: Professor Clifford Will delivered a startling presentation to the general public, who completely filled the Auditori—the main conference room, 320 seats—and were invited to ask questions to the speaker who boldly guided them through the daunting world of Black Holes, Waves of Gravity, and other Warped Ideas

  5. Managing the identification of the mortal victims run over by a train in the Castelldefels railway accident (Barcelona).

    Science.gov (United States)

    Barbería, Eneko; Martin-Fumadó, Carles; Galtés, Ignasi; Subirana-Domenech, Mercé; Puigbarraca-Sol, Lourdes; Vidal-Gutiérrez, Claudina; Valverde-Villarreal, Juan Luis; Castellà-García, Josep; Medallo-Muñiz, Jordi

    2015-09-01

    The identification of disaster victims is the formal, organized process of identifying multiple bodies after an incident with multiple victims. The appropriate management of these incidents, particularly of the bodies, is one of the most crucial aspects of disaster response and its importance has led to the evolution of the concept of Disaster Victim Management. The aim of this study is to report how the process of identifying the 12 mortal victims of a railway accident in June 2010 in Castelldefels (Barcelona) was managed. The methodology used complied with the National Protocol for medical forensic and scientific police response to mass casualty incidents. The family assistance center also served as an ante mortem (AM) office. Despite the fragmentation of the bodies, all the victims were identified satisfactorily. The main problems observed during the management of the disaster were due to the state of the bodies, which raised many doubts as to the number of fatalities. The experience prompted a proposal to establish some recommendations on limiting the number of fragments to be analyzed genetically. We would like to stress the importance of setting up a Data Integration Center which brought together all the participating institutions, and collected and supervised all the different identification reports in a single comprehensive text addressed to the competent legal authority. PMID:26026775

  6. Do we need full mesoscale models to simulate the urban heat island? A study over the city of Barcelona.

    Science.gov (United States)

    García-Díez, Markel; Ballester, Joan; De Ridder, Koen; Hooyberghs, Hans; Lauwaet, Dirk; Rodó, Xavier

    2016-04-01

    As most of the population lives in urban environments, the simulation of the urban climate has become an important part of the global climate change impact assessment. However, due to the high resolution required, these simulations demand a large amount of computational resources. Here we present a comparison between a simplified fast urban climate model (UrbClim) and a widely used full mesoscale model, the Weather Research and Forecasting (WRF) model, over the city of Barcelona. In order to check the advantages and disadvantages of each approach, both simulations were compared with station data and with land surface temperature observations retrieved by satellites, focusing on the urban heat island. The effect of changing the UrbClim boundary conditions was studied too, by using low resolution global reanalysis data (70 km) and a higher resolution forecast model (15 km). Finally, a strict comparison of the computational resources consumed by both models was carried out. Results show that, generally, the performance of the simple model is comparable to or better than the mesoscale model. The exception are the winds and the day-to-day correlation in the reanalysis driven run, but these problems disappear when taking the boundary conditions from a higher resolution global model. UrbClim was found to run 133 times faster than WRF, using 4x times higher resolution and, thus, it is an efficient solution for running long climate change simulations over large city ensembles.

  7. Barcelona 2002: law, ethics, and human rights. Global battle cry: health is a right, not a commodity.

    Science.gov (United States)

    Fernandez, Irene

    2002-12-01

    Health is a fundamental right, not a commodity to be sold at a profit, argues Irene Fernandez in the second Jonathan Mann Memorial Lecture delivered on 8 July 2002 to the XIV International AIDS Conference in Barcelona. Ms Fernandez had to obtain a special permit from the Malaysian government to attend the Conference because she is on trial for having publicly released information about abuse, torture, illness, corruption, and death in Malaysian detention camps for migrants. This article, based on Ms Fernandez' presentation, describes how the policies of the rich world have failed the poor world. According to Ms Fernandez, the policies of globalization and privatization of health care have hindered the ability of developing countries to respond to the HIV/AIDS epidemic. The article decries the hypocrisy of the industrialized nations in increasing subsidies to farmers while demanding that the developing world open its doors to Western goods. It points out that the rich nations have failed to live up their foreign aid commitments. The article concludes that these commitments--and the other promises made in the last few years, such as those in the United Nations' Declaration of Commitment on HIV/AIDS--can only become a reality if they are translated into action. PMID:14743815

  8. 22@ and the Innovation District in Barcelona and Montreal: A Process of Clustering Development between Urban Regeneration and Economic Competitiveness

    Directory of Open Access Journals (Sweden)

    Angelo Battaglia

    2011-01-01

    Full Text Available This paper analyzes the governance strategy of the 22@ District in Barcelona in order to assess the factors that explain its success and could support the economic reconversion of Montreal’s future Innovation District (ID, as well as that of other cities. We examine the case of the 22@ District as a former industrial neighbourhood seen as a “model” of urban regeneration and economic revitalization. Our assumption is that the world’s major cities are going through a phase based on the reorganization of central urban areas. Our article evaluates the main factors of urban regeneration in the 22@—district of innovation and it identifies elements of best practices in terms of governance which can be constructive for the “Quartier de l’Innovation” in Montreal and similar projects of other cities. The paper highlights the role of decision makers concerning the process of governance of 22@ and its historic changes, and insists on the the role of socioeconomic actors and territorial factors that could support the level of integration and implementation of Montreal@ID. Our paper highlights the importance of the integration process based on socio-territorial innovations characterizing the Catalan context of 22@ as well as the Innovation District, something useful for other similar initiatives.

  9. Assessing visitor satisfaction with a pioneering agritourism project: vegetable tourism in the Parc Agrari del Baix Llobregat (Barcelona

    Directory of Open Access Journals (Sweden)

    Valerià Paül Carril

    2015-01-01

    Full Text Available Entre los principales cambios que se han producido en el sector turístico en los últimos años, de mención especial ha sido la aparición constante de nuevos productos que buscan satisfacer las necesidades de los turistas más exigentes. Un buen ejemplo de ello es el agroturismo, en el que el turista participa en las actividades típicas de una explotación agraria. Este estudio se centra en una variante reciente de este tipo de turismo, conocida como holeriturismo. En concreto, el análisis se lleva a cabo en un proyecto pionero en España en un parque agrario: el Parc Agrari del Baix Llobregat (Barcelona. Con base a la información obtenida de una encuesta realizada en el propio Parqu , se analiza el grado de satisfacción de los visitantes con las diversas actividades que experimentan. A través del uso de métodos estadísticos no paramétricos, el estudio busca determinar si el perfil sociodemográfico de los visitantes, y su conocimiento del concepto de turismo de verduras tienen un impacto significativo en sus valoraciones.

  10. Field evidence of social influence in the expression of political preferences: the case of secessionist flags in Barcelona

    CERN Document Server

    Parravano, Antonio; Tena, Jordi; Hermida, Paula

    2014-01-01

    Different models of social influence have explored the dynamics of social contagion, imitation, and diffusion of different types of traits, opinions, and conducts. However, few behavioral data indicating social influence dynamics have been obtained from direct observation in `natural' social contexts. The present research provides that kind of evidence in the case of the public expression of political preferences in the city of Barcelona, where thousands of citizens supporting the secession of Catalonia from Spain have placed a Catalan flag in their balconies. We present two different studies. 1) In July 2013 we registered the number of flags in 26% of the the city. We find that there is a large dispersion in the density of flags in districts with similar density of pro-independence voters. However, we find that the density of flags tends to be fostered in those electoral district where there is a clear majority of pro-independence vote, while it is inhibited in the opposite cases. 2) During 17 days around Ca...

  11. Evaluating the Environmental Performance of Urban Parks in Mediterranean Cities: An Example from the Barcelona Metropolitan Region

    Science.gov (United States)

    Parés-Franzi, Marc; Saurí-Pujol, David; Domene, Elena

    2006-11-01

    In a context of increasing urban sprawl and water scarcity common to other Mediterranean cities, this article focuses on the urban parks in the Region of Barcelona (Catalonia, Spain) to examine how these parks are distributed in this region and to assess whether their design and management follow criteria adapted to Mediterranean environmental conditions, especially in what concerns water use. In order to evaluate the environmental performance of these parks, we selected four factors possibly influencing the adoption of park management practices at the local scale: urban density, population size of the municipality, municipal income per capita, and political orientation of the city council. After determining the location and area of urban parks in the region, we correlated these four explanatory factors with several management tasks extracted from two different samples of parks (one of 315 parks and another of 125 parks) and a survey of 86 city councils. Results show that, in general, urban parks were more frequent in large, dense, and left/green municipalities but that environmentally sound practices were more common in small and low-density municipalities. We conclude that changes in certain practices (especially the substitution of high water demanding species) could improve significantly the environmental performance of public spaces in large urban areas with Mediterranean climates. Our observations may be pertinent for other cities interested in the provision of environmental public goods such as parks that necessitate water for irrigation.

  12. Managing an odour episode in Barcelona's water supply: strategies adopted, the causative agent (diacetyl) and determination of its organoleptic properties.

    Science.gov (United States)

    Martín-Alonso, J; Devesa, R; Bernal, A; Matia, L

    2007-01-01

    The Llobregat River is a basic drinking water resource for the city of Barcelona, meeting 40% of the demand. The river runs through a densely populated industrial area, so that it has in its history experienced various episodes due to industrial spills. The present work deals with a recent episode involving diacetyl. To the best of our knowledge this episode is the first time that this compound has been identified as an odour-causing compound in water. In a previous work the analytical method used for the identification of the compound causing the episode was described. The present work focuses its attention on how the episode was handled: action taken at the Sant Joan Despi water treatment plant and the sampling strategy on the river that led to the identification of the company responsible for the spill, a paper mill. It also deals with the role played by the FPA panel in the resolution of the episode: organoleptic description of samples of the problem in the initial phase of the episode (from the treatment plant, distribution network and customer complaints) and, once the compound responsible was identified, the determination of its organoleptic characteristics (odour threshold, odour descriptors, Weber-Fechner curve). PMID:17489412

  13. Department of reactor technology

    International Nuclear Information System (INIS)

    The activities of the Department of Reactor Technology at Risoe during 1979 are described. The work is presented in five chapters: Reactor Engineering, Reactor Physics and Dynamics, Heat Transfer and Hydraulics, The DR 1 Reactor, and Non-Nuclear Activities. A list of the staff and of publications is included. (author)

  14. RB reactor noise analysis

    International Nuclear Information System (INIS)

    Statistical fluctuations of reactivity represent reactor noise. Analysis of reactor noise enables determining a series of reactor kinetic parameters. Fluctuations of power was measured by ionization chamber placed next to the tank of the RB reactor. The signal was digitized by an analog-digital converter. After calculation of the mean power, 3000 data obtained by sampling were analysed

  15. Research Nuclear Reactors

    International Nuclear Information System (INIS)

    Published in English and in French, this large report first proposes an overview of the use and history of research nuclear reactors. It discusses their definition, and presents the various types of research reactors which can be either related to nuclear power (critical mock-ups, material test reactors, safety test reactors, training reactors, prototypes), or to research (basic research, industry, health), or to specific particle physics phenomena (neutron diffraction, isotope production, neutron activation, neutron radiography, semiconductor doping). It reports the history of the French research reactors by distinguishing the first atomic pile (ZOE), and the activities and achievements during the fifties, the sixties and the seventies. It also addresses the development of instrumentation for research reactors (neutron, thermal, mechanical and fission gas release measurements). The other parts of the report concern the validation of neutronics calculations for different reactors (the EOLE water critical mock-up, the MASURCA air critical mock-up dedicated to fast neutron reactor study, the MINERVE water critical mock-up, the CALIBAN pulsed research reactor), the testing of materials under irradiation (OSIRIS reactor, laboratories associated with research reactors, the Jules Horowitz reactor and its experimental programs and related devices, irradiation of materials with ion beams), the investigation of accident situations (on the CABRI, Phebus, Silene and Jules Horowitz reactors). The last part proposes a worldwide overview of research reactors

  16. In the matter of the application of the Westinghouse Electric Corporation for the export of pressurized water reactor to Asociacion Nuclear ASCO II, Barcelona, Spain

    International Nuclear Information System (INIS)

    The paper contains the text of a decision of the US NRC that the export of the ASCO nuclear power unit II to Spain would not be inimical to the common defense and security of the United States, so that there are no objections to issue the license to Westinghouse Electric Corporation. Furthermore the paper contains the dissenting opinion of Commissioner Gilinsky. (HP)

  17. Reactor Physics Training

    International Nuclear Information System (INIS)

    University courses in nuclear reactor physics at the universities consist of a theoretical description of the physics and technology of nuclear reactors. In order to demonstrate the basic concepts in reactor physics, training exercises in nuclear reactor installations are also desirable. Since the number of reactor facilities is however strongly decreasing in Europe, it becomes difficult to offer to students a means for demonstrating the basic concepts in reactor physics by performing training exercises in nuclear installations. Universities do not generally possess the capabilities for performing training exercises. Therefore, SCK-CEN offers universities the possibility to perform (on a commercial basis) training exercises at its infrastructure consisting of two research reactors (BR1 and VENUS). Besides the organisation of training exercises in the framework of university courses, SCK-CEN also organizes theoretical courses in reactor physics for the education and training of nuclear reactor operators. It is indeed a very important subject to guarantee the safe operation of present and future nuclear reactors. In this framework, an understanding of the fundamental principles of nuclear reactor physics is also necessary for reactor operators. Therefore, the organisation of a basic Nuclear reactor physics course at the level of reactor operators in the initial and continuous training of reactor operators has proven to be indispensable. In most countries, such training also results from the direct request from the safety authorities to assure the high level of competence of the staff in nuclear reactors. The objectives this activity are: (1) to provide training and education activities in reactor physics for university students and (2) to organise courses in nuclear reactor physics for reactor operators

  18. Introduction of Nuclear Reactor Engineering

    International Nuclear Information System (INIS)

    This book introduces development, status, supply and demand and resource of nuclear reactor. It deals with basic knowledge of nuclear reactor, which are reactor system, heat recovery in reactor core, structural feature in reactor, materials of structure in reactor, shielding of gamma ray, shielding of reactor, safety and environmental problem of nuclear power plant, nuclear fuel and economical efficiency of nuclear energy.

  19. Safeguarding research reactors

    International Nuclear Information System (INIS)

    The report is organized in four sections, including the introduction. The second section contains a discussion of the characteristics and attributes of research reactors important to safeguards. In this section, research reactors are described according to their power level, if greater than 25 thermal megawatts, or according to each fuel type. This descriptive discussion includes both reactor and reactor fuel information of a generic nature, according to the following categories. 1. Research reactors with more than 25 megawatts thermal power, 2. Plate fuelled reactors, 3. Assembly fuelled reactors. 4. Research reactors fuelled with individual rods. 5. Disk fuelled reactors, and 6. Research reactors fuelled with aqueous homogeneous fuel. The third section consists of a brief discussion of general IAEA safeguards as they apply to research reactors. This section is based on IAEA safeguards implementation documents and technical reports that are used to establish Agency-State agreements and facility attachments. The fourth and last section describes inspection activities at research reactors necessary to meet Agency objectives. The scope of the activities extends to both pre and post inspection as well as the on-site inspection and includes the examination of records and reports relative to reactor operation and to receipts, shipments and certain internal transfers, periodic verification of fresh fuel, spent fuel and core fuel, activities related to containment and surveillance, and other selected activities, depending on the reactor

  20. Research nuclear reactors

    International Nuclear Information System (INIS)

    Since the divergence of the first nuclear reactor in 1942, about 600 research or test reactors have been built throughout the world. Today 255 research reactors are operating in 57 countries and about 70% are over 25 years old. Whereas there are very few reactor types for power plants because of rationalization and standardisation, there is a great diversity of research reactors. We can divide them into 2 groups: heavy water cooled reactors and light water moderated reactors. Heavy water cooled reactors are dedicated to the production of high flux of thermal neutrons which are extracted from the core by means of neutronic channels. Light water moderated reactors involved pool reactors and slightly pressurized closed reactors, they are polyvalent but their main purposes are material testing, technological irradiations, radionuclide production and neutron radiography. At the moment 8 research reactors are being built in Canada, Germany, Iran, Japan, Kazakhstan, Morocco, Russia and Slovakia and 8 others are planned in 7 countries (France, Indonesia, Nigeria, Russia, Slovakia, Thailand and Tunisia. Different research reactors are described: Phebus, Masurca, Phenix and Petten HFR. The general principles of nuclear safety applied to test reactors are presented. (A.C.)